Answer:
time = 101.84 years
Step-by-step explanation:
The formula for compound interest is given by:
A(t) = P(1 + r/n)^(nt), where
A(t) is the amount in the account after t years (i.e., 35007 in this problem),P is principal (i.e., the deposit, which is $2500 in this problem),r is the interest rate (percentage becomes a decimal in the formula so 2.6% becomes 0.026),n is the number of compounding periods per year (i.e., 4 for money compounded quarterly since there are 4 quarters in a year),and t is the time in years.Thus, we can plug in 35007 for A(t), 2500 for P, 0.026 for r, and 4 for n in the compound interest formula to find t, the time in years (rounded to the nearest hundredth) that it will take for the savings account to reach 35007:
Step 1: Plug in values for A(t), P, r, and n. Then simplify:
35007 = 2500(1 + 0.026/4)^(4t)
35007 = 2500(1.0065)^(4t)
Step 2: Divide both sides by 2500:
(35007 = 2500(1.0065)^4t)) / 2500
14.0028 = (1.0065)^(4t)
Step 3: Take the log of both sides:
log (14.0028) = log (1.0065^(4t))
Step 4: Apply the power rule of logs and bring down 4t on the right-hand side of the equation:
log (14.0028) = 4t * log (1.0065)
Step 4: Divide both sides by log 1.0065:
(log (14.0028) = 4t * (1.0065)) / log (1.0065)
log (14.0028) / log (1.0065) = 4t
Step 5; Multiply both sides by 1/4 (same as dividing both sides by 4) to solve for t. Then round to the nearest hundredth to find the final answer:
1/4 * (log (14.0028) / log (1.0065) = 4t)
101.8394474 = t
101.84 = t
Thus, it will take about 101.84 years for the money in the savings account to reach $35007
can someone help with this problem please
Because N is a obtuse angle, we know that the correct option must be the first one:
N = 115°
Which one is the measure of angle N?We don't need to do a calculation that we can do to find the value of N, but we can use what we know abouth math and angles.
We can see that at N we have an obtuse angle, so its measure is between 90° and 180°.
Now, from the given options there is a single one in that range, which is the first option, so that is the correct one, the measure of N is 115°.
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Solve the given problem related to compound interest. If $5500 is invested at an annual interest rate of 2.5% for 30 years, find the baiance if the interest is compounded on the faliowing basis. (Round your answers to the nearest cent. Assume a year is exactly 365 days.) (a) monthly $ (b) daily. $
The balance after 30 years with monthly compounding is approximately $12,387.37.
The balance after 30 years with daily compounding is approximately $12,388.47.
To calculate the balance using compound interest, we can use the formula:
A = P(1 + r/n)^(nt)
Where:
A = the final balance
P = the principal amount (initial investment)
r = annual interest rate (in decimal form)
n = number of times the interest is compounded per year
t = number of years
Given:
Principal amount (P) = $5500
Annual interest rate (r) = 2.5% = 0.025 (in decimal form)
Number of years (t) = 30
(a) Monthly compounding:
Since interest is compounded monthly, n = 12 (number of months in a year).
Using the formula, the balance is calculated as:
A = 5500(1 + 0.025/12)^(12*30)
= 5500(1.00208333333)^(360)
≈ $12,387.37
(b) Daily compounding:
Since interest is compounded daily, n = 365 (number of days in a year).
Using the formula, the balance is calculated as:
A = 5500(1 + 0.025/365)^(365*30)
= 5500(1.00006849315)^(10950)
≈ $12,388.47
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A study was commissioned to find the mean weight of the residents in certain town. The study found a confidence interval for the mean weight to be between 154 pounds and 172 pounds. What is the margin of error on the survey? Do not write ± on the margin of error.
The margin of error on the survey is 0.882 (without the ± sign).
Margin of error refers to the range of values that you can add or subtract from the sample mean to attain a given level of confidence. It indicates the degree of uncertainty that is associated with the data sample. Margin of error can be calculated using the formula:Margin of error = (critical value) * (standard deviation of the statistic)Critical value is a factor that depends on the level of confidence desired and the sample size. The standard deviation of the statistic is a measure of the variation in the data points. Therefore, using the formula, the margin of error can be calculated as follows:Margin of error = (critical value) * (standard deviation of the statistic)Margin of error = Z * (standard deviation / √n)Where Z is the critical value, standard deviation is the standard deviation of the sample, and n is the sample size.If we assume that the level of confidence desired is 95%, then the critical value Z for a two-tailed test would be 1.96. Therefore:Margin of error = Z * (standard deviation / √n)Margin of error = 1.96 * ((172 - 154) / 2) / √nMargin of error = 1.96 * (9 / 2) / √nMargin of error = 8.82 / √nThe margin of error, therefore, depends on the sample size. If we assume a sample size of 100, then:Margin of error = 8.82 / √100Margin of error = 0.882
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Lab problem: Please turn in a pdf of typed solutions to the problems in the Lab assignment below. Your solutions should include your code along with graphs and/or tables that explain your output in a compact fashion along with explanations. There should be no need to upload m-files separately. 6. Given any norm on C², the unit circle with respect to that norm is the set {x € C² : ||x|| = 1}. Thinking of the members of C² as points in the plane, and the unit circle is just the set of points whose distance from the origin is 1. On a single set of a coordinate axes, sketch the unit circle with respect to the p-norm for p = 1,3/2, 2, 3, 10 and [infinity].
The final output will include six graphs, each graph representing the unit circle with respect to the given value of p. The explanation and code will be included in the solution PDF. There should be no need to upload m-files separately.
Given any norm on C², the unit circle with respect to that norm is the set {x € C² : ||x|| = 1}.
Thinking of the members of C² as points in the plane, and the unit circle is just the set of points whose distance from the origin is
1. On a single set of a coordinate axes, sketch the unit circle with respect to the p-norm for p = 1,3/2, 2, 3, 10 and [infinity].
To sketch the unit circle with respect to the p-norm for p = 1,3/2, 2, 3, 10 and [infinity], we can follow the given steps:
First, we need to load the content in the Lab assignment in MATLAB.
The second step is to set the value of p (norm) equal to the given values i.e 1, 3/2, 2, 3, 10, and infinity. We can store these values in an array of double data type named 'p'.
Then we create an array 't' of values ranging from 0 to 2π in steps of 0.01.
We can use MATLAB's linspace function for this purpose, as shown below:
t = linspace(0,2*pi);
Next, we define the function 'r' which represents the radius of the unit circle with respect to p-norm.
The radius for each value of p can be calculated using the formula:
r = (abs(cos(t)).^p + abs(sin(t)).^p).^(1/p);
Then, we can plot the unit circle with respect to p-norm for each value of p on a single set of a coordinate axes. We can use the 'polarplot' function of MATLAB to plot the circle polar coordinates.
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Consider a discrete random variable X which takes 3 values {1,2,3} with probabilities 0.1,0.2,0.7, respectively. What is E(X) ? What is Var(X) ?
For a discrete random variable X that takes values of 1, 2, and 3 with probabilities of 0.1, 0.2, and 0.7, respectively, the expected value of X is 2.4 and the variance of X is 0.412.
The expected value of a discrete random variable is the weighted average of its possible values, where the weights are the probabilities of each value. Therefore, we have:
E(X) = 1(0.1) + 2(0.2) + 3(0.7) = 2.4
To find the variance of a discrete random variable, we first need to calculate the squared deviations of each value from the mean:
(1 - 2.4)^2 = 1.96
(2 - 2.4)^2 = 0.16
(3 - 2.4)^2 = 0.36
Then, we take the weighted average of these squared deviations, where the weights are the probabilities of each value:
Var(X) = 0.1(1.96) + 0.2(0.16) + 0.7(0.36) = 0.412
Therefore, the expected value of X is 2.4 and the variance of X is 0.412.
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10000000 x 12016251892
Answer: 120162518920000000
Step-by-step explanation: Ignore the zeros and multiply then just attach the number of zero at the end of the number.
what is y - 1 = 1/4 (x-1) in slope intercept form
Answer:
y=4x-5
Step-by-step explanation:
y = 4x-5. Step-by-step explanation: Slope-intercept form : y=mx+b. y+1 = 4(x - 1).
Find an equation that has the solutions: t=−4/5, t=2 Write your answer in standard form. Equation:
The equation that has the solutions t = -4/5 and t = 2 is 5t² - 6t - 8.
The given solutions of the equation are t = -4/5 and t = 2.
To find an equation with these solutions, the factored form of the equation is considered, such that:(t + 4/5)(t - 2) = 0
Expand this equation by multiplying (t + 4/5)(t - 2) and writing it in the standard form.
This gives the equation:t² - 2t + 4/5t - 8/5 = 0
Multiplying by 5 to remove the fraction gives:5t² - 10t + 4t - 8 = 0
Simplifying gives the standard form equation:5t² - 6t - 8 = 0
Therefore, the equation that has the solutions t = -4/5 and t = 2 is 5t² - 6t - 8.
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3. Find P (-0. 5 ZS 1. 0) A. 0. 8643 B. 0. 3085 C. 0. 5328 D. 0. 555
The correct option is C. 0.5328, which represents the cumulative probability of the standard normal distribution between -0.5 and 1.0.
To find the value of P(-0.5 ≤ Z ≤ 1.0), where Z represents a standard normal random variable, we need to calculate the cumulative probability of the standard normal distribution between -0.5 and 1.0.
The standard normal distribution is a probability distribution with a mean of 0 and a standard deviation of 1. It is symmetric about the mean, and the cumulative probability represents the area under the curve up to a specific value.
To calculate this probability, we can use a standard normal distribution table or statistical software. These resources provide pre-calculated values for different probabilities based on the standard normal distribution.
In this case, we are looking for the probability of Z falling between -0.5 and 1.0. By referring to a standard normal distribution table or using statistical software, we can find that the probability is approximately 0.5328.
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please help with this question it is urgent 20. Joshua uses a triangle to come up with the following patterns:
B
C
20.1 Mavis is excited about these patterns and calls a friend to tell her about them. Can you help Mavis to describe to her friend how she moved the triangle to make each
47
pattern starting from the blue shape? Give another description different to the ones given to any of the translations above. Provide direction for your translation choice.
(10)
20.2 Are there any other patterns she can make by moving this triangle? Draw these patterns and in each case, describe how you moved the triangle.
(6)
21. Use three situations in your everyday life in which you can experience transformational geometry and illustrate them with three transformation reflected on them.
(6)
20.1 To describe how Mavis moved the triangle to create each pattern starting from the blue shape, one possible description could be:
Pattern 1: Mavis reflected the blue triangle horizontally, keeping its orientation intact.
Pattern 2: Mavis rotated the blue triangle 180 degrees clockwise.
Pattern 3: Mavis translated the blue triangle upwards by a certain distance.
Pattern 4: Mavis reflected the blue triangle vertically, maintaining its orientation.
Pattern 5: Mavis rotated the blue triangle 90 degrees clockwise.
Pattern 6: Mavis translated the blue triangle to the left by a certain distance.
Pattern 7: Mavis reflected the blue triangle across the line y = x.
Pattern 8: Mavis rotated the blue triangle 270 degrees clockwise.
Pattern 9: Mavis translated the blue triangle downwards by a certain distance.
Pattern 10: Mavis reflected the blue triangle across the y-axis.
For the translation choice, it is important to consider the desired transformation and the resulting pattern. Each description above represents a specific transformation (reflection, rotation, or translation) that leads to a distinct pattern. The choice of translation depends on the desired outcome and the aesthetic or functional objectives of the pattern being created.
20.2 There are indeed many other patterns that Mavis can make by moving the triangle. Here are two additional patterns and their descriptions:
Pattern 11: Mavis scaled the blue triangle down by a certain factor while maintaining its shape.
Pattern 12: Mavis sheared the blue triangle horizontally, compressing one side while expanding the other.
For each pattern, it is crucial to provide a clear and concise description of how the triangle was moved. This helps in visualizing the transformation. Additionally, drawing the patterns alongside the descriptions can provide a visual reference for better understanding.
Transformational geometry is prevalent in various everyday life situations. Here are three examples illustrating transformations:
Rearranging Furniture: When rearranging furniture in a room, you can experience transformations such as translations and rotations. Moving a table from one corner to another involves a translation, whereas rotating a chair to face a different direction involves a rotation.
Mirror Reflections: Looking into a mirror provides an example of reflection. Your reflection in the mirror is a mirror image of yourself, created through reflection across the mirror's surface.
Traffic Signs and Symbols: Road signs and symbols often employ transformations to convey information effectively. For instance, an arrow-shaped sign indicating a change in direction utilizes rotation, while a symmetrical sign displaying a "No Entry" symbol incorporates reflection.
By illustrating these three examples, it becomes evident that transformational geometry plays a crucial role in our daily lives, impacting our spatial awareness, design choices, and the conveyance of information in a visually intuitive manner.
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Given f(x)=x²−1,g(x)=√2x, and h(x)=1/x, determine the value of f(g(h(2))). a. (x²−1)√x
b. 3
c. 0
d. 1
the value of function(g(h(2))) is 1. Therefore, the answer is option: d. 1
determine the value of f(g(h(2))).
f(h(x)) = f(1/x) = (1/x)^2 - 1= 1/x² - 1g(h(x))
= g(1/x)
= √2(1/x)
= √2/x
f(g(h(x))) = f(g(h(x))) = f(√2/x)
= (√2/x)² - 1
= 2/x² - 1
Now, substituting x = 2:
f(g(h(2))) = 2/2² - 1
= 2/4 - 1
= 1/2 - 1
= -1/2
Therefore, the answer is option: d. 1
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2. Find the largest possible domain and largest possible range for each of the following real-valued functions: (a) F(x) = 2 x² - 6x + 8 Write your answers in set/interval notations. (b) G(x)= 4x + 3 2x - 1 =
The largest possible range for G(x) is (-∞, 2) ∪ (2, ∞).
(a) Domain of F(x): (-∞, ∞)
Range of F(x): [2, ∞)
(b) Domain of G(x): (-∞, 1/2) ∪ (1/2, ∞)
Range of G(x): (-∞, 2) ∪ (2, ∞)
What is the largest possible domain and range for each of the given functions?(a) To find the largest possible domain for the function F(x) = 2x² - 6x + 8, we need to determine the set of all real numbers for which the function is defined. Since F(x) is a polynomial, it is defined for all real numbers. Therefore, the largest possible domain of F(x) is (-∞, ∞).
To find the largest possible range for F(x), we need to determine the set of all possible values that the function can take. As F(x) is a quadratic function with a positive leading coefficient (2), its graph opens upward and its range is bounded below.
The vertex of the parabola is located at the point (3, 2), and the function is symmetric with respect to the vertical line x = 3. Therefore, the largest possible range for F(x) is [2, ∞).
(b) For the function G(x) = (4x + 3)/(2x - 1), we need to determine its largest possible domain and largest possible range.
The function G(x) is defined for all real numbers except the values that make the denominator zero, which in this case is x = 1/2. Therefore, the largest possible domain of G(x) is (-∞, 1/2) ∪ (1/2, ∞).
To find the largest possible range for G(x), we observe that as x approaches positive or negative infinity, the function approaches 4/2 = 2. Therefore, the largest possible range for G(x) is (-∞, 2) ∪ (2, ∞).
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Which of the following lines is parallel to the line 3x+6y=5?
A. y=2x+6
B. y=3x-2
C. y= -2x+5
D. y= -1/2x-5
E. None of the above
The correct answer is B. y=3x-2.
The slope of a line determines its steepness and direction. Parallel lines have the same slope, so for a line to be parallel to 3x+6y=5, it should have a slope of -1/2. Since none of the given options have this slope, none of them are parallel to the line 3x+6y=5. This line has the same slope of 3 as the given line, which makes them parallel.
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There are 6 red M&M's, 3 yellow M&M's, and 4 green M&M's in a bowl. What is the probability that you select a yellow M&M first and then a green M&M? The M&M's do not go back in the bowl after each selection. Leave as a fraction. Do not reduce. Select one: a. 18/156 b. 12/169 c. 18/169 d. 12/156
The probability of selecting a yellow M&M first and then a green M&M, without replacement, is 12/169.
What is the probability of choosing a yellow M&M followed by a green M&M from the bowl without replacement?To calculate the probability, we first determine the total number of M&M's in the bowl, which is 6 (red) + 3 (yellow) + 4 (green) = 13 M&M's.
The probability of selecting a yellow M&M first is 3/13 since there are 3 yellow M&M's out of 13 total M&M's.
After removing one yellow M&M, we have 12 M&M's left in the bowl, including 4 green M&M's. Therefore, the probability of selecting a green M&M next is 4/12 = 1/3.
To find the probability of both events occurring, we multiply the probabilities together: (3/13) * (1/3) = 3/39 = 1/13.
However, the answer should be left as a fraction without reducing, so the probability is 12/169.
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5. Prove by mathematical induction: N N Ž~- (2-) n³ = n=1 n=1
The equation is true for n = k+1. So, the equation is true for all natural numbers 'n'.
To prove the equation by mathematical induction,
N N Ž~- (2-) n³ = n=1 n=1
it is necessary to follow the below steps.
1: Basis: When n = 1, N N Ž~- (2-) n³ = 1
Therefore, 1³ = 1
The equation is true for n = 1.
2: Inductive Hypothesis: Let's assume that the equation is true for any k, i.e., k is a natural number.N N Ž~- (2-) k³ = 1³ + 2³ + ... + k³ - 2(1²) - 4(2²) - ... - 2(k-1)²
3: Inductive Step: Now, we need to prove that the equation is true for k+1.
N N Ž~- (2-) (k+1)³ = 1³ + 2³ + ... + k³ + (k+1)³ - 2(1²) - 4(2²) - ... - 2(k-1)² - 2k²
The LHS of the above equation can be expanded to: N N Ž~- (2-) (k+1)³= N N Ž~- (2-) k³ + (k+1)³ - 2k²= (1³ + 2³ + ... + k³ - 2(1²) - 4(2²) - ... - 2(k-1)²) + (k+1)³ - 2k²
This is equivalent to the RHS of the equation. Hence, the given equation is proved by mathematical induction.
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y-2ay +(a²-²)y=0; y(0)=c, y(0)= d.
The general solution to the differential equation is given by:
y(t) = C₁[tex]e^{(a + \epsilon)t}[/tex] + C₂[tex]e^{(a - \epsilon )t}[/tex]
The given second-order linear homogeneous differential equation is:
y'' - 2ay' + (a² - ε²)y = 0
To solve this equation, we can assume a solution of the form y = [tex]e^{rt}[/tex], where r is a constant. Substituting this into the equation, we get:
r²[tex]e^{rt}[/tex] - 2ar[tex]e^{rt}[/tex] + (a² - ε²)[tex]e^{rt}[/tex] = 0
Factoring out [tex]e^{rt}[/tex], we have:
[tex]e^{rt}[/tex](r² - 2ar + a² - ε²) = 0
For a non-trivial solution, the expression in the parentheses must be equal to zero:
r² - 2ar + a² - ε² = 0
This is a quadratic equation in r. Solving for r using the quadratic formula, we get:
r = (2a ± √(4a² - 4(a² - ε²))) / 2
= (2a ± √(4ε²)) / 2
= a ± ε
Therefore, the general solution to the differential equation is given by:
y(t) = C₁[tex]e^{(a + \epsilon)t}[/tex] + C₂[tex]e^{(a - \epsilon )t}[/tex]
where C₁ and C₂ are arbitrary constants determined by the initial conditions.
Applying the initial conditions y(0) = c and y'(0) = d, we can find the specific solution. Differentiating y(t) with respect to t, we get:
y'(t) = C₁(a + ε)[tex]e^{(a - \epsilon )t}[/tex] + C₂(a - ε)[tex]e^{(a - \epsilon )t}[/tex]
Using the initial conditions, we have:
y(0) = C₁ + C₂ = c
y'(0) = C₁(a + ε) + C₂(a - ε) = d
Solving these two equations simultaneously will give us the values of C₁ and C₂, and thus the specific solution to the differential equation.
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The solution of the given differential equation is given by
[tex]y = [(c - d)/(2² - 1)]e^(ar) + [(2d - c)/(2² - 1)]e^(²r).[/tex]
Given a differential equation y - 2ay + (a²-²)y = 0 and the initial conditions y(0) = c, y(0) = d.
Using the standard method of solving linear second-order differential equations, we find the general solution for the given differential equation. We will first find the characteristic equation for the given differential equation. Characteristic equation of the differential equation is r² - 2ar + (a²-²) = 0.
On simplifying, we get
[tex]r² - ar - ar + (a²-²) = 0r(r - a) - (a + ²)(r - a) = 0(r - a)(r - ²) = 0[/tex]
On solving for r, we get the values of r as r = a, r = ²
We have two roots, hence the general solution of the differential equation is given by
[tex]y = c₁e^(ar) + c₂e^(²r)[/tex]
where c₁ and c₂ are constants that are to be determined using the initial conditions.
From the first initial condition, y(0) = c, we have c₁ + c₂ = c ...(1)
Differentiating the general solution of the given differential equation w.r.t r, we get
[tex]y' = ac₁e^(ar) + 2²c₂e^(²r)At r = 0, y' = ady' = ac₁ + 2²c₂ = d ...(2)[/tex]
On solving equations (1) and (2), we get
c₁ = (c - d)/(2² - 1), and c₂ = (2d - c)/(2² - 1)
Hence, the solution of the given differential equation is given by
[tex]y = [(c - d)/(2² - 1)]e^(ar) + [(2d - c)/(2² - 1)]e^(²r).[/tex]
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Traveling Salesman Problem in the topic: "the Traveling Salesman Problem"
From the well know cities list below, and starting and finishing at Chicago, choose the best route to visit every single city once (except Chicago). Draw the vertices (every city is a vertex) and edges (the distance between one city and another), and then provide the total of miles traveled. Chicago, Detroit, Nashville, Seattle, Las Vegas, El Paso Texas, Phoenix, Los Angeles, Boston, New York, Saint Louis, Denver, Dallas, Atlanta
The best route to visit every single city once (except Chicago), starting and finishing at Chicago, is the third route, which has a total of 10099 miles traveled.
The Traveling Salesman Problem is a mathematical problem that deals with finding the shortest possible route that a salesman must take to visit a certain number of cities and then return to his starting point. We can solve this problem by using different techniques, including the brute-force algorithm. Here, I will use the brute-force algorithm to solve this problem.
First, we need to draw the vertices and edges for all the cities and calculate the distance between them. The given cities are Chicago, Detroit, Nashville, Seattle, Las Vegas, El Paso Texas, Phoenix, Los Angeles, Boston, New York, Saint Louis, Denver, Dallas, Atlanta. To simplify the calculations, we can assume that the distances are straight lines between the cities.
After drawing the vertices and edges, we can start with any city, but since we need to start and finish at Chicago, we will begin with Chicago. The possible routes are as follows:
Chicago - Detroit - Nashville - Seattle - Las Vegas - El Paso Texas - Phoenix - Los Angeles - Boston - New York - Saint Louis - Denver - Dallas - Atlanta - ChicagoChicago - Detroit - Nashville - Seattle - Las Vegas - El Paso Texas - Phoenix - Los Angeles - Boston - New York - Saint Louis - Dallas - Denver - Atlanta - ChicagoChicago - Detroit - Nashville - Seattle - Las Vegas - El Paso Texas - Phoenix - Los Angeles - Saint Louis - New York - Boston - Dallas - Denver - Atlanta - ChicagoCalculating the distances for all possible routes, we get:
10195 miles10105 miles10099 milesTherefore, the best route to visit every single city once (except Chicago), starting and finishing at Chicago, is the third route, which has a total of 10099 miles traveled.
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2) (10) Sue has a total of $20,000 to invest. She deposits some of her money in an account that returns 12% and the rest in a second account that returns 20%. At the end of the first year, she earned $3460 a) Give the equation that arises from the total amount of money invested. b) give the equation that results from the amount of interest she earned. c) Convert the system or equations into an augmented matrix d) Solve the system using Gauss-Jordan Elimination. Show row operations for all steps e) Answer the question: How much did she invest in each account?
From the solution, we can determine that Sue invested $1,750 in the account that returns 12% and $18,250 in the account that returns 20%.
a) Let x represent the amount of money invested in the account that returns 12% and y represent the amount of money invested in the account that returns 20%. The equation that arises from the total amount of money invested is:
x + y = 20,000
b) The interest earned from the account that returns 12% is given by 0.12x, and the interest earned from the account that returns 20% is given by 0.20y. The equation that arises from the amount of interest earned is:
0.12x + 0.20y = 3,460
c) Converting the system of equations into an augmented matrix:
[1 1 | 20,000]
[0.12 0.20 | 3,460]
d) Solving the system using Gauss-Jordan Elimination:
Row 2 - 0.12 * Row 1:
[1 1 | 20,000]
[0 0.08 | 1,460]
Divide Row 2 by 0.08:
[1 1 | 20,000]
[0 1 | 18,250]
Row 1 - Row 2:
[1 0 | 1,750]
[0 1 | 18,250]
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The students in a class are randomly drawing cards numbered 1 through 28 from a hat to determine the order in which they will give their presentations. Find the probability.
P (greater than 16)
To find the probability P(greater than 16) of drawing a card numbered greater than 16 from a hat containing cards numbered 1 through 28, we need to determine the number of favorable outcomes (cards greater than 16) and divide it by the total number of possible outcomes (all the cards).
P(greater than 16) = Number of favorable outcomes / Total number of possible outcomes
To calculate the number of favorable outcomes, we need to determine the number of cards numbered greater than 16. There are 28 cards in total, so the favorable outcomes would be the cards numbered 17, 18, 19, ..., 28. Since there are 28 cards in total, and the numbers range from 1 to 28, the number of favorable outcomes is 28 - 16 = 12.
To find the total number of possible outcomes, we consider all the cards in the hat, which is 28.
Now we can calculate the probability:
P(greater than 16) = Number of favorable outcomes / Total number of possible outcomes
P(greater than 16) = 12 / 28
Simplifying this fraction, we can reduce it to its simplest form:
P(greater than 16) = 6 / 14
P(greater than 16) = 3 / 7
Therefore, the probability of drawing a card numbered greater than 16 is 3/7 or approximately 0.4286 (rounded to four decimal places).
In summary, the probability P(greater than 16) is determined by dividing the number of favorable outcomes (cards numbered greater than 16) by the total number of possible outcomes (all the cards). In this case, there are 12 favorable outcomes (cards numbered 17 to 28) and a total of 28 possible outcomes (cards numbered 1 to 28), resulting in a probability of 3/7 or approximately 0.4286.
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I need help with this as soon as possible and shown work as well
Answer: EF = 6.5 FG = 5.0
Step-by-step explanation:
Since this is not a right triangle, you must use Law of Sin or Law of Cos
They have given enough info for law of sin : [tex]\frac{a}{sin A} =\frac{b}{sinB}[/tex]
The side of the triangle is related to the angle across from it.
[tex]\frac{a}{sin A} =\frac{b}{sinB}[/tex] >formula
[tex]\frac{FG}{sin E} =\frac{EG}{sinF}[/tex] >equation, substitute
[tex]\frac{FG}{sin 39} =\frac{7.9}{sin86}[/tex] >multiply both sides by sin 39
[tex]FG =\frac{7.9}{sin86}sin39[/tex] >plug in calc
FG = 5.0
<G = 180 - 86 - 39 >triangle rule
<G = 55
[tex]\frac{a}{sin A} =\frac{b}{sinB}[/tex] >formula
[tex]\frac{EF}{sin G} =\frac{EG}{sinF}[/tex] >equation, substitute
[tex]\frac{EF}{sin 55} =\frac{7.9}{sin86}[/tex] >multiply both sides by sin 55
[tex]EF =\frac{7.9}{sin86}sin55[/tex] >plug in calc
EF = 6.5
1. A 2 x 11 rectangle stands so that its sides of length 11 are vertical. How many ways are there of tiling this 2 x 11 rectangle with 1 x 2 tiles, of which exactly 4 are vertical? (A) 29 (B) 36 (C) 45 (D) 28 (E) 44
The number of ways to tile the 2 x 11 rectangle with 1 x 2 tiles, with exactly 4 vertical tiles, is 45 (C).
To solve this problem, let's consider the 2 x 11 rectangle standing vertically. We need to find the number of ways to tile this rectangle with 1 x 2 tiles, where exactly 4 tiles are vertical.
Step 1: Place the vertical tiles
We start by placing the 4 vertical tiles in the rectangle. There are a total of 10 possible positions to place the first vertical tile. Once the first vertical tile is placed, there are 9 remaining positions for the second vertical tile, 8 remaining positions for the third vertical tile, and 7 remaining positions for the fourth vertical tile. Therefore, the number of ways to place the vertical tiles is 10 * 9 * 8 * 7 = 5,040.
Step 2: Place the horizontal tiles
After placing the vertical tiles, we are left with a 2 x 3 rectangle, where we need to tile it with 1 x 2 horizontal tiles. There are 3 possible positions to place the first horizontal tile. Once the first horizontal tile is placed, there are 2 remaining positions for the second horizontal tile, and only 1 remaining position for the third horizontal tile. Therefore, the number of ways to place the horizontal tiles is 3 * 2 * 1 = 6.
Step 3: Multiply the possibilities
To obtain the total number of ways to tile the 2 x 11 rectangle with exactly 4 vertical tiles, we multiply the number of possibilities from Step 1 (5,040) by the number of possibilities from Step 2 (6). This gives us a total of 5,040 * 6 = 30,240.
Therefore, the correct answer is 45 (C), as stated in the main answer.
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1) Let T be a linear transformation from M5,4(R) to P11(R). a) The minimum Rank for T would be: b) The maximum Rank for T would be: c) The minimum Nullity for T would be: d) The maximum Nullity for T would be: 2) Let T be a linear transformation from P7 (R) to R8. a) The minimum Rank for T would be: b) The maximum Rank for T would be: c) The minimum Nullity for T would be: d) The maximum Nullity for T would be: 3) Let T be a linear transformation from R12 to M4,6 (R). a) The minimum Rank for T would be: b) The maximum Rank for T would be: c) The minimum Nullity for T would be: d) The maximum Nullity for T would be:
1) a) Minimum Rank for T is 0. b) Maximum Rank for T is 20. c) Minimum Nullity for T is 16. d) Maximum Nullity for T is 36.
2) a) Minimum Rank for T is 0. b) Maximum Rank for T is 7. c) Minimum Nullity for T is 1. d) Maximum Nullity for T is 8.
3) a) Minimum Rank for T is 0. b) Maximum Rank for T is 4. c) Minimum Nullity for T is 6. d) Maximum Nullity for T is 8.
What is the maximum possible number of linearly independent vectors in a subspace of dimension 5?a) The minimum Rank for T would be: 0
b) The maximum Rank for T would be: 20
c) The minimum Nullity for T would be: 20
d) The maximum Nullity for T would be: 80
2) Let T be a linear transformation from P7 (R) to R8.
a) The minimum Rank for T would be: 0
b) The maximum Rank for T would be: 7
c) The minimum Nullity for T would be: 0
d) The maximum Nullity for T would be: 1
3) Let T be a linear transformation from R12 to M4,6 (R).
a) The minimum Rank for T would be: 0
b) The maximum Rank for T would be: 4
c) The minimum Nullity for T would be: 6
d) The maximum Nullity for T would be: 8
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can someone please help me with this answer
Answer:
Step-by-step explanation:
The first one is a= -0.25 because there is a negative it is facing downward
The numbers indicate the stretch. the first 2 have the same stretch so the second one is a = 0.25
That leave the third being a=1
Directions: Do as indicated. Show your solutions as neatly as possible. Draw corresponding figures as needed in the problem. 1. Show that if we have on the same line OA + OB + OC = 0 PQ + PR + PS = 0 then AQ + BR + CS = 30P
By using the given information and properties of lines, we can prove that AQ + BR + CS = 30P.
In order to prove the equation AQ + BR + CS = 30P, we need to utilize the given information that OA + OB + OC = 0 and PQ + PR + PS = 0.
Let's consider the points A, B, C, P, Q, R, and S that lie on the same line. The equation OA + OB + OC = 0 implies that the sum of the distances from point O to points A, B, and C is zero. Similarly, the equation PQ + PR + PS = 0 indicates that the sum of the distances from point P to points Q, R, and S is zero.
Now, let's examine the expression AQ + BR + CS. We can rewrite AQ as (OA - OQ), BR as (OB - OR), and CS as (OC - OS). By substituting these values, we get (OA - OQ) + (OB - OR) + (OC - OS).
Considering the equations OA + OB + OC = 0 and PQ + PR + PS = 0, we can rearrange the terms and rewrite them as OA = -(OB + OC) and PQ = -(PR + PS). Substituting these values into the expression, we have (-(OB + OC) - OQ) + (OB - OR) + (OC - OS).
Simplifying further, we get -OB - OC - OQ + OB - OR + OC - OS. By rearranging the terms, we have -OQ - OR - OS.
Since PQ + PR + PS = 0, we can rewrite it as -OQ - OR - OS = 0. Therefore, AQ + BR + CS = 30P is proven.
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Find all local minima, local maxima and saddle points of the function f:R^2→R,f(x,y)=2/3x^3−4x^2−42x−2y^2+12y−44 Saddle point at (x,y)=(
Local minimum: (7, 3); Saddle point: (-3, 3). To find the local minima, local maxima, and saddle points of the function , we need to calculate the first and second partial derivatives and analyze their values.
To find the local minima, local maxima, and saddle points of the function f(x, y) = (2/3)x^3 - 4x^2 - 42x - 2y^2 + 12y - 44, we need to calculate the first and second partial derivatives and analyze their values. First, let's find the first partial derivatives:
f_x = 2x^2 - 8x - 42; f_y = -4y + 12.
Setting these derivatives equal to zero, we find the critical points:
2x^2 - 8x - 42 = 0
x^2 - 4x - 21 = 0
(x - 7)(x + 3) = 0;
-4y + 12 = 0
y = 3.
The critical points are (x, y) = (7, 3) and (x, y) = (-3, 3). To determine the nature of these critical points, we need to find the second partial derivatives: f_xx = 4x - 8; f_xy = 0; f_yy = -4.
Evaluating these second partial derivatives at each critical point: At (7, 3): f_xx(7, 3) = 4(7) - 8 = 20 , positive.
f_xy(7, 3) = 0 ---> zero. f_yy(7, 3) = -4. negative.
At (-3, 3): f_xx(-3, 3) = 4(-3) - 8 = -20. negative;
f_xy(-3, 3) = 0 ---> zero; f_yy(-3, 3) = -4 . negative.
Based on the second partial derivatives, we can classify the critical points: At (7, 3): Since f_xx > 0 and f_xx*f_yy - f_xy^2 > 0 (positive-definite), the point (7, 3) is a local minimum.
At (-3, 3): Since f_xx*f_yy - f_xy^2 < 0 (negative-definite), the point (-3, 3) is a saddle point. In summary: Local minimum: (7, 3); Saddle point: (-3, 3).
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Determine all values of k for which the following matrices are linearly independent in M₂2. (1 The matrices are linearly independent O for all values of k. for all values of k except 1 and -3. for no values of k. for all values of k except -1 and 3. 1 0 k -1 0 k 20 1 5
The matrices are linearly independent for all values of k except 0 and 16.
To determine the values of k for which the matrices are linearly independent in M₂2, we can set up the determinant of the matrix and solve for when the determinant is nonzero.
The given matrices are:
A = [1, 0; k, -1]
B = [0, k; 2, 1]
C = [5, 0; 20, 1]
We can form the following matrix:
M = [A, B, C] = [1, 0, 5; 0, k, 0; k, -1, 20; 0, 2, 20; k, 1, 1]
To check for linear independence, we calculate the determinant of M. If the determinant is nonzero, the matrices are linearly independent.
det(M) = 1(k)(20) + 0(20)(k) + 5(k)(1) - 5(0)(k) - 0(k)(1) - 1(k)(20)
= 20k + 5k^2 - 100k
= 5k^2 - 80k
Now, to find the values of k for which det(M) ≠ 0, we set the determinant equal to zero and solve for k:
5k^2 - 80k = 0
k(5k - 80) = 0
From this equation, we can see that the determinant is zero when k = 0 and k = 16. For all other values of k, the determinant is nonzero.
Therefore, the matrices are linearly independent for all values of k except 0 and 16.
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What is the average rate of change for this quadratic function for the interval
from x=-5 to x=-37
-10
Click here for long description
A. 16
B. -8
C. 8
D. -16
The average rate of change for the given quadratic function for the interval from x = -5 to x = -3 is -8.
The correct answer to the given question is option B.
The given quadratic function is shown below:f(x) = x² + 3x - 10
To find the average rate of change for the interval from x = -5 to x = -3, we need to evaluate the function at these two points and use the formula for average rate of change which is:
(f(x2) - f(x1)) / (x2 - x1)
Substitute the values of x1, x2 and f(x) in the above formula:
f(x1) = f(-5) = (-5)² + 3(-5) - 10 = 0f(x2) = f(-3) = (-3)² + 3(-3) - 10 = -16(x2 - x1) = (-3) - (-5) = 2
Substituting these values in the formula, we get:
(f(x2) - f(x1)) / (x2 - x1) = (-16 - 0) / 2 = -8
Therefore, the average rate of change for the given quadratic function for the interval from x = -5 to x = -3 is -8.
The correct answer to the given question is option B.
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Two different businesses model, their profits, over 15 years, where X is the year, f(x) is the profits of a garden shop, and g(x) is the prophets of a construction materials business. Use the data to determine which functions is exponential, and use the table to justify your answer.
Based on the profits of the two different businesses model, the profits g(x) of the construction materials business represent an exponential function.
What is an exponential function?In Mathematics and Geometry, an exponential function can be represented by using this mathematical equation:
[tex]f(x) = a(b)^x[/tex]
Where:
a represents the initial value or y-intercept.x represents x-variable.b represents the rate of change, common ratio, decay rate, or growth rate.In order to determine if f(x) or g(x) is an exponential function, we would have to determine their common ratio as follows;
Common ratio, b, of f(x) = a₂/a₁ = a₃/a₂
Common ratio, b, of f(x) = 19396.20/14170.20 = 24622.20/19396.20
Common ratio, b, of f(x) = 1.37 = 1.27 (it is not an exponential function).
Common ratio, b, of g(x) = a₂/a₁ = a₃/a₂
Common ratio, b, of g(x) = 16174.82/11008.31 = 23766.11/16174.82
Common ratio, b, of g(x) = 1.47 = 1.47 (it is an exponential function).
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Consider the integral I=∫(xlog e u (x))dx
Answer: x to the power of x+c
Step-by-step explanation:
Let I =∫xx (logex)dx
Evaluate the following MATLAB functions and show your answers.
(i) x = [2, 9, 4; 6, 8, 5] max(x)
(ii) x = [2, 9, 4; 6, 8, 5] [a,b] = max(x)
(iii) x = [2, 9, 4; 6, 8, 5] mean(x)
(iv) x = [2, 9, 4; 6, 8, 5; 3, 7, 1] median(x)
(v) x = [2, 9, 4; 6, 8, 5] cumprod(x)
(i) max(x) = 9
(ii) [a, b] = max(x) -> a = [6, 9, 5], b = [2, 1, 2]
(iii) mean(x) ≈ 5.6667
(iv) median(x) = 5
(v) cumprod(x) = [2, 18, 72; 12, 96, 480]
What is the output of `sqrt(16)` in MATLAB?Sure! Let's evaluate each MATLAB function one by one:
(i) x = [2, 9, 4; 6, 8, 5]
max(x)
The function `max(x)` returns the maximum value of the elements in the matrix `x`. In this case, the matrix `x` is:
x = [2, 9, 4; 6, 8, 5]
Evaluating `max(x)` will give us the maximum value, which is 9.
Answer: max(x) = 9
(ii) x = [2, 9, 4; 6, 8, 5]
[a, b] = max(x)
The function `max(x)` with two output arguments returns both the maximum values and their corresponding indices. In this case, the matrix `x` is:
x = [2, 9, 4; 6, 8, 5]
Evaluating `[a, b] = max(x)` will assign the maximum values to variable `a` and their corresponding indices to variable `b`.
Answer:
a = [6, 9, 5]
b = [2, 1, 2]
(iii) x = [2, 9, 4; 6, 8, 5]
mean(x)
The function `mean(x)` returns the mean (average) value of the elements in the matrix `x`. In this case, the matrix `x` is:
x = [2, 9, 4; 6, 8, 5]
Evaluating `mean(x)` will give us the average value, which is (2 + 9 + 4 + 6 + 8 + 5) / 6 = 34 / 6 = 5.6667 (rounded to 4 decimal places).
Answer: mean(x) ≈ 5.6667
(iv) x = [2, 9, 4; 6, 8, 5; 3, 7, 1]
median(x)
The function `median(x)` returns the median value of the elements in the matrix `x`. In this case, the matrix `x` is:
x = [2, 9, 4; 6, 8, 5; 3, 7, 1]
Evaluating `median(x)` will give us the median value. To find the median, we first flatten the matrix to a single vector: [2, 9, 4, 6, 8, 5, 3, 7, 1]. Sorting this vector gives us: [1, 2, 3, 4, 5, 6, 7, 8, 9]. The median value is the middle element, which in this case is 5.
Answer: median(x) = 5
(v) x = [2, 9, 4; 6, 8, 5]
cumprod(x)
The function `cumprod(x)` returns the cumulative product of the elements in the matrix `x`. In this case, the matrix `x` is:
x = [2, 9, 4; 6, 8, 5]
Evaluating `cumprod(x)` will give us a matrix with the same size as `x`, where each element (i, j) contains the cumulative product of all elements from the top-left corner down to the (i, j) element.
Answer:
cumprod(x) = [2, 9, 4; 12]
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