In this instance, the buoy forms the right corner of a triangle made up of the two ships and the buoy. To the closest tenth, the distance between the two ships is roughly [tex]24.1[/tex] km.
What is the distance between two object?To find the distance between the two ships, we can use the Pythagorean theorem, which states that in a right triangle, the sum of the squares of the lengths of the legs
(the sides that form the right angle) is equal to the square of the length of the hypotenuse (the side opposite the right angle).
In this case, the two ships and the buoy form a right triangle, with the buoy at the right angle.
Let d be the distance between the two ships, x be the distance of the northern ship to the buoy and y be the distance of the eastern ship to the buoy. Then we have:
[tex]d^2 = x^2 + y^2[/tex]
Substituting the given values, we get:
[tex]d^2 = (20 km)^2 + (13.5 km)^2[/tex]
[tex]d^2 = 400 km^2 + 182.25 km^2[/tex]
[tex]d^2 = 582.25 km^2[/tex]
[tex]d ≈ 24.1 km[/tex]
Therefore, the distance between the two ships is approximately 24.1 km, rounded to the nearest tenth.
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9. There are 8 black socks, 6 blue socks, and 14 white socks in a drawer. If one sock is randomly chosen from the
drawer, then what is the probability that the sock will not be blue?
The probability that the socks will not be blue would be =11/14.
How to calculate the probability of socks that are not blue in colour?Probability can be defined as the expression that shows the possibility of the occurrence of an event.
The formula that is used to calculate probability = the chosen events/total number of outcomes.
The total number of black socks = 8
The total number of blue socks = 6
The total number of white socks = 14
The total number of socks (outcomes) = 8+6+14 = 28
The socks that are not blue = 8+14 = 2
Therefore the probability that they socks won't be blue = 22/28 = 11/14.
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The graph of the cubic parent equation, y=x3
, is plotted on the coordinate plane.
Select two equations that represent a shift of the graph of the parent equation to the right on the coordinate plane.
Responses
y=x3+2
y = x 3 + 2
y=x3−1
y = x 3 - 1
y=(x−12)3
y = ( x - 12 ) 3
y=(x+8)3
y = ( x + 8 ) 3
y=(x+7)3
y = ( x + 7 ) 3
y=(x−4)3
Therefore , the solution of the given problem of equation comes out to be y=(x-12)³ and y=(x+8)³.
What is an equation?Variable words are commonly used in complex algorithms to show consistency between two contradictory claims. Academic expressions called equations are used to show the equality of various academic numbers. Instead of a distinct algorithm that divides 12 into two parts and can be used to assess data received from y + 7, normalization in this case yields b + 7.
Here,
The following two equations show a rightward translation of the parent equation's coordinate plane graph:
=> y=(x-12)³
=> y=(x+8)³
Therefore , the solution of the given problem of equation comes out to be y=(x-12)³ and y=(x+8)³.
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The geometric mean between 16 and 20 is
Answer: 17.888543819998
Step-by-step explanation:
Answer:
17.8885
Step-by-step explanation:
find the geometric mean between 16 and 20, we need to multiply the numbers and take the square root of the result. That is:
Geometric Mean = √(16 × 20)
Geometric Mean = √320
Geometric Mean ≈ 17.8885
Therefore, the geometric mean between 16 and 20 is approximately 17.8885.
Please help!! Determine what line the angle below has been reflection across. Justify your answer
The line of reflection for the given angle is corresponding vertices.
1. Identify the original angle and its reflected angle in the diagram.
2. Find the midpoint between the corresponding vertices of the original and reflected angles.
3. Draw a line through the midpoint that is perpendicular to the line connecting the corresponding vertices.
In general, to reflect an angle across a line, you would draw a perpendicular line from the vertex of the angle to the line of reflection, and then extend the sides of the angle to intersect the line of reflection at the same angle. The line of reflection would be the perpendicular bisector of the segment connecting the vertex of the original angle to the corresponding vertex of the reflected angle.
This line is the line of reflection, and the angles are reflected across it. The justification for this method is that the line of reflection is equidistant from the corresponding points of the original and reflected angles
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in a gambling game a person draws a single card from an ordinary 52-card playing deck. a person is paid $19 for drawing a jack or a queen and $5 for drawing a king or an ace. a person who draws any other card pays $2. if a person plays this game, what is the expected gain? (round your answer to the nearest cent.)
the expected gain is $0.77, rounded to the nearest cent.The expected gain is the sum of the products of the probability of each outcome and its corresponding payoff.
There are 4 jacks, 4 queens, 4 kings, and 4 aces in a standard 52-card deck. So the probability of drawing a jack or a queen is 8/52 = 2/13, and the probability of drawing a king or an ace is also 8/52 = 2/13. The probability of drawing any other card is 1 - 2/13 - 2/13 = 9/13.
The expected gain is the sum of the products of the probability of each outcome and its corresponding payoff. So:
Expected gain = (2/13) * 19 + (2/13) * 5 + (9/13) * (-2)
Expected gain = 38/13 - 10/13 - 18/13
Expected gain = 10/13 ≈ 0.77
Therefore, the expected gain is $0.77, rounded to the nearest cent.
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I don’t understand this stuff-
By using the fact that the measures ∠BAE and ∠EAC are equal, we will see that x = 20
How to get the value of x?Here we know that AE is an angle bisector of ∠BAC, this means that the measures of the two formed angles are the same ones.
Then we can write:
∠BAE = ∠EAC
Now we know that the measures of these angles are:
∠BAE = x + 30
∠EAC = 3x - 10
Replacing that in the equation above we willget:
x + 30 = 3x - 10
solving that for x, we will get:
30 + 10 = 3x - x
40 = 2x
40/2 = x
20 = x
That is the value of x.
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Factor completely 16x2 − 25. (4x − 5)(4x − 5)
(4x + 5)(4x − 5)
(16x + 5)(x − 5)
(16x − 5)(x + 5)
Answer:
Step-by-step explanation:
(4x - 5)(4x + 5) Option 1
16x^2 + 20x - 20x - 25
Tyler has run 10. 4 miles,which is 65 percent of the total distance he plans to run this week. What is the total distance that Tyler plans to run this week
Tyler has run 10.4 miles, which is 65% of the total distance he plans to run this week. Tyler plans to run a total of 16 miles this week.
Let's use "x" to represent the total distance that Tyler plans to run this week. According to the problem, Tyler has already run 10.4 miles, which is 65% of the total distance he plans to run. We can set up an equation to represent this information:
10.4 = 0.65x
To solve for x, we can divide both sides of the equation by 0.65:
x = 10.4 ÷ 0.65
x = 16
Therefore, the total distance that Tyler plans to run this week is 16 miles.
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Factorise
15x²y³z+25x³y²z+35x²y²z²
Answer:
First, we can factor out 5x²y²z from each term:
15x²y³z+25x³y²z+35x²y²z² = 5x²y²z(3y+5xz+7z)
So the fully factorized expression is:
5x²y²z(3y+5xz+7z)
Do anybody know this?
The coordinate of the point U that divides the line ST in the ratio 2:5 is: (12:6)
What are the coordinates of the division of the line segment?The formula for the division of line segments in the ratio m:n is
P = {[(mx2 + nx1)/(m + n)], [(my2 + ny1)/(m + n)]}
We are given the coordinates of line Segment ST as: S(10, 2) and T(17, 16)
Thus, if the ratio is 2:5, we have:
U(x, y) = {[(2*17 + 5*10)/(2 + 5)], [(2*16 + 5*2)/(2 + 5)]}
U(x, y) = (84/7), (42/7)
U(x, y) = (12, 6)
Thus, that is the coordinate of the point U that divides the line ST in the ratio 2:5.
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Implementing multiple types of technology and thereby precluding that the failure of one system will compromise the security of information is referred to as ____. (p. 205)
Implementing multiple types of technology and thereby precluding that the failure of one system will compromise the security of information is referred to as redundancy.
Explanation:
What is redundancy?Redundancy is the term used to describe the use of multiple components in a system to ensure that the failure of one component does not lead to system failure. Redundancy is a method of protecting computer systems against damage and disruption caused by component failure.The use of redundancy in computer systems is usually targeted at increasing system availability and lowering the likelihood of data loss.
Multiple types of technology may be employed to achieve redundancy in a computer system, such as mirroring data across multiple disks, deploying standby servers, using a hot backup server, and so on. Redundancy can be implemented in numerous ways to provide reliable service and protect against system failure.
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A movie theater wanted to determine the average rate that their diet soda is purchased. An employee gathered data on the amount of diet soda remaining in the machine, y, for several hours after the machine is filled, x. The following scatter plot and line of fit was created to display the data. scatter plot titled soda machine with the x axis labeled time in hours and the y axis labeled amount of diet soda in fluid ounces, with points at 1 comma 35, 1 comma 39, 2 comma 32, 3 comma 24, 3 comma 30, 4 comma 20, 5 comma 18, 5 comma 22, 6 comma 4, 6 comma 14, 7 comma 8, and 8 comma 0, with a line passing through the coordinates 3 comma 25.2 and 7 comma 4.84 Find the y-intercept of the line of fit and explain its meaning in the context of the data. The y-intercept is −5.1. The machine starts with 5.1 ounces of diet soda. The y-intercept is 40.5. The machine starts with 40.5 ounces of diet soda. The y-intercept is −5.1. The machine loses about 5.1 fluid ounces of diet soda each hour. The y-intercept is 40.5. The machine loses about 40.5 fluid ounces of diet soda each hour.
The correct answer is: The y-intercept is −5.1. The machine starts with 5.1 ounces of diet soda.
What is the equation of the line?
A linear equation is an algebraic equation of the form y=mx+b. where m is the slope and b is the y-intercept.
The y-intercept of a line of fit is the value of y when x equals 0. In the context of this problem, the y-intercept represents the amount of diet soda that the machine starts with when it is filled.
Since the y-intercept of the line of fit is −5.1, this means that the machine starts with 5.1 ounces of diet soda.
This is a reasonable value, as it is unlikely that the machine would be completely empty when it is filled.
It's important to note that the slope of the line of fit is also relevant in this context.
The slope represents the rate at which the amount of diet soda in the machine decreases over time. However, the question only asked for the y-intercept.
Hence, the correct answer is: The y-intercept is −5.1. The machine starts with 5.1 ounces of diet soda.
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a newsletter publisher believes that under 69% 69 % of their readers own a rolls royce. is there sufficient evidence at the 0.10 0.10 level to substantiate the publisher's claim? state the null and alternative hypotheses for the above scenario.
No, there is not sufficient evidence to substantiate the claim at the 0.10 level. Null Hypothesis (H0): p ≤ 0.69; Alternative Hypothesis (H1): p > 0.69
A newsletter publisher believes that under 69% of their readers own a Rolls Royce.
No, there is not sufficient evidence to substantiate the claim at the 0.10 level. In order to substantiate the claim at the 0.10 level, the publisher would need to collect data from their readers and perform a hypothesis test to compare the observed percentage of readers with the claimed percentage.
Null Hypothesis: The proportion of the newsletter readers that own a Rolls Royce is less than or equal to 69%.
Null Hypothesis (H0): p ≤ 0.69
Alternative Hypothesis: The proportion of the newsletter readers that own a Rolls Royce is greater than 69%.
Alternative Hypothesis (H1): p > 0.69
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draw marbles from a bag which contains 5 red marbles, 6 blue marbles and 4 green marbles with replacement until you get a blue marble. a) binomial b) poisson c) hypergeometric d) none of these
the correct answer is: none of these, as only binomial distribution is applicable to this scenario.
a) This scenario follows the binomial distribution, as we are drawing marbles with replacement and interested in the number of successes (getting a blue marble) in a fixed number of trials.
b) The Poisson distribution is used to model the number of events occurring in a fixed time interval, given a certain rate of occurrence. It is not applicable in this scenario.
c) The hypergeometric distribution is used to model the probability of obtaining a certain number of successes in a sample without replacement, given a finite population of items that can be classified into successes and failures. In this scenario, we are drawing with replacement, so the hypergeometric distribution is not applicable.
d) Therefore, the correct answer is: none of these, as only binomial distribution is applicable to this scenario.
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what are the 4 uppercase letters of the alphabet in block style with rotational symmetry?
The four uppercase letters of the alphabet in block style with rotational symmetry are H, I, O, and X. Rotational symmetry refers to the property of a figure or object that appears identical after being rotated around a central point by a certain angle.
In block style writing, letters are written with straight lines and sharp corners, creating a uniform and geometric appearance. H, I, O, and X are the only uppercase letters that have rotational symmetry and can be written in block style.
H has a rotational symmetry of 180 degrees, meaning it looks the same when rotated 180 degrees around its center point.
I has a rotational symmetry of 180 degrees as well, with the dot above the letter acting as its center point.
O has a rotational symmetry of 360 degrees, meaning it looks the same when rotated any number of degrees around its center point.
Lastly, X has a rotational symmetry of 180 degrees, with the intersection of the two lines acting as its center point.
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Julie works Sunday,
, and Wednesday for 10 hours each day. On Tuesday, Thursday, and Friday, she works 7 hours each day. She does not work on Saturday. Her weekly total earnings are $612
Julie hourly rate of pay from the given different rates of the day with total earning of $612 is equal to $12per hour.
Total number of hours Julie works in a week is equal to,
On Sunday = 10 hours
On Monday = 10 hours
On Tuesday = 7 hours
On Wednesday = 10 hours
On Thursday = 7 hours
On Friday = 7 hours
On Saturday = 0 hours
Total hours worked in whole week is
= 10 + 10 + 7 + 10 + 7 + 7 + 0
= 51 hours
Total money earned by Julie in whole week = $612
Hourly rate of pay = Weekly earnings / Total hours worked
Substitute the value we have,
⇒ Hourly rate of pay = $612 / 51 hours
⇒ Hourly rate of pay = $12 per hour
Therefore, Julie's hourly rate of pay is $12 per hour.
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The above question is incomplete , the complete question is:
Julie works Sunday, Monday, and Wednesday for 10 hours each day. On Tuesday, Thursday, and Friday, she works 7 hours each day. She does not work on Saturday. Her weekly total earnings are $612. What is Julie's hourly rate of pay, in dollars?
Find all the solutions in the equation 2 cos(x)- sqrt30 =0 in the interval [0,2pi)
Answer:
For me it's C.
Step-by-step explanation:
the third one if you would like me to explain tell me.
The solutions to the trigonometric equations [tex]2cos(x) - \sqrt{30} = 0[/tex] in the interval [tex][0, 2\pi)[/tex] are x ≈ [tex]0.5514 + 2n\pi[/tex], where n is an integer.
Given that the equation [tex]2cos(x) - \sqrt{30} = 0[/tex] in the interval [tex][0, 2\pi)[/tex]
To find all the solutions to the equation [tex]2cos(x) - \sqrt{30} = 0[/tex] in the interval [tex][0, 2\pi)[/tex] , solve for x by isolating the cosine term and then applying the inverse cosine function.
Here are the steps to solve the equation:
Add [tex]\sqrt{30}[/tex] to both sides:
[tex]2cos(x) = \sqrt{30}[/tex]
Divide both sides by 2:
[tex]cos(x) = \sqrt{30} / 2[/tex]
Find the inverse cosine ([tex]cos^{-1}[/tex]) of both sides:
[tex]x = cos^{-1}(\sqrt{30} / 2)[/tex]
To determine the values of x in the interval [tex][0, 2\pi)[/tex] that satisfy the equation.
Evaluate [tex]cos^{-1}(\sqrt{30} / 2)[/tex] to find its approximate value.
[tex]cos^{-1}(\sqrt{30} / 2) = 0.5514[/tex] radians
Since the cosine function has a periodicity of [tex]2\pi[/tex], we can find other solutions by adding multiples of [tex]2\pi[/tex] to the initial solution.
So, the solutions in the interval [tex][0, 2\pi)[/tex] are:
x ≈ 0.5514 radians
x ≈ [tex]0.5514 + 2\pi[/tex]
x ≈ [tex]0.5514 + 4\pi[/tex]
...
To simplify, express the solutions as:
x ≈ [tex]0.5514 + 2n\pi[/tex]
where n is an integer.
Therefore, the solutions to the trigonometric equations [tex]2cos(x) - \sqrt{30} = 0[/tex] in the interval [tex][0, 2\pi)[/tex] are x ≈ [tex]0.5514 + 2n\pi[/tex], where n is an integer.
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Pls help. Questions 7-10
The key features of both equations are:
Equation 1 has a vertex at (1, -16) and opens upwards. Its axis of symmetry is x = 1
Equation 2 has a vertex at (2, 2) and opens upwards. Its axis of symmetry is x = 2.
How do we solve?To rewrite each equation in vertex form, we need to complete the square by adding and subtracting a constant from each equation.
y = x² - 2x - 15
y = (x - 1)² - 16
The vertex form of the equation is y = a(x - h)² + k, where (h, k) is the vertex. In this case, the vertex is (1, -16).
y = 2x² - 8x + 6
y = 2(x - 2)² + 2
The vertex form of the equation is y = a(x - h)² + k, where (h, k) is the vertex. In this case, the vertex is (2, 2).
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PLEASE HELP WITH ENTIRE WORK SHEET I AM STRUGGLING SO BAD I WILL GIVE ALL POINTS AND MARK YOU BRAINLIEST FOR EVERYTHING PLEASE HELP! :( LOTS OF LOVE <3
Answer:
1-
a. 19
b. -8
2-
a. -31
b. 0
c. -10.7
d. -3/7
e. 4
3-
a. -5
b. -60
c. 0
d. -1/4
4. -13/2
5. -85/18
6. -5/12
7. -11
8. 16/11
9. -20/27
10. 26/11
11. -55/9
Step-by-step explanation:
why did i do this
listed are 29 ages for academy award winning best actors in order from smallest to largest. 18; 21; 22; 25; 26; 27; 29; 30; 31; 33; 36; 37; 41; 42; 47; 52; 55; 57; 58; 62; 64; 67; 69; 71; 72; 73; 74; 76; 77 find the percentile rank of age 30.
The percentile rank of age 30 is 27.586%.
The percentile rank of age 30 can be calculated using the following equation:
Percentile rank = (number of scores below 30 / total number of scores) x 100
In this case, the total number of scores is 29, and there are 8 scores below 30 (18, 21, 22, 25, 26, 27, 29, and 30). Therefore, the percentile rank of age 30 is:
(8/29) x 100 = 27.586%
The percentile rank of age 30 is 27.586%.
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find the length of a round to the nearest tenth
C=120 degrees b=5 c=11
Answer: a=7.6
Step-by-step explanation:
solve for angle C:
[tex]\frac{sinc}{5} =\frac{sin120}{11}[/tex]
[tex]11sinc=5sin120[/tex]
[tex]C=23.2[/tex]
solve for A:
=180-(120+23.2)
=36.8
solve for a:
Using the law of sines
[tex]\frac{sin120}{11} =\frac{sin36.8}{a}[/tex]
[tex]asin120=11sin36.8[/tex]
[tex]a=7.6[/tex]
The closing stock prices for a particular social media company follows an unknown distribution with a mean of $150 and a standard deviation of $25. An investor is looking to find the likelihood of the closing stock price falling above the average. After randomly selecting n=52 closing stock prices from the social media company, use a calculator to find the probability that the sample mean is between $155 and $160.
Rounded to three decimal places.
Rounded to three decimal places, the probability that the sample mean is between $155 and $160 is 0.072.
To find the probability that the sample mean is between $155 and $160, we will use the Central Limit Theorem. The Central Limit Theorem states that the distribution of the sample mean (with a large enough sample size) will be approximately normally distributed with the same mean and a standard deviation equal to the population standard deviation divided by the square root of the sample size.
Mean of the sample distribution: μ = $150
Standard deviation of the sample distribution: [tex]σ/√n = $25/√52 ≈ $3.46[/tex]
Now, we'll calculate the z-scores for $155 and $160:
[tex]Z1 = (155 - 150) / 3.46 ≈ 1.445[/tex]
[tex]Z2 = (160 - 150) / 3.46 ≈ 2.890[/tex]
Using a z-table or calculator, we can find the probability for each z-score:
[tex]P(Z1) ≈ 0.9259[/tex]
[tex]P(Z2) ≈ 0.9981[/tex]
Now, we can find the probability between the two z-scores:
[tex]P(1.445 < Z < 2.890) = P(Z2) - P(Z1) = 0.9981 - 0.9259 = 0.0722[/tex]
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Write a phrase in words for each algebraic
expression.
22. m+83_
23.42s
24. 9/d
25. t - 29
26. 2+g
27. 11x
28. h/12
29. 5- k
t decreased by 29 , Two more than g , Eleven times x , h divided by twelve and Five minus k are the phrase of given expression .
what is expression ?An expression in mathematics is a group of digits, variables, and operations that illustrates a mathematical connection or concept. Symbols, words, or a combination of both can be used to write expressions in a variety of ways. Expressions that are examples include: 3x + 4, 2y - 7z , (a + b) ,x2 + y2 = 2 5sin(x) + 3cos(x). Equations, inequalities, functions, formulae, and many other mathematical ideas can all be represented as expressions. Additionally, they can be altered or simplified using algebraic methods like factoring, combining like terms, and solving for a variable.
given
The sum of m and 83.
Forty-two times s.
Nine divided by d.
t decreased by 29.
Two more than g.
Eleven times x.
h divided by twelve.
Five minus k
t decreased by 29 , Two more than g , Eleven times x , h divided by twelve and Five minus k are the phrase of given expression .
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Frank organized a raffle. He sells 300 tickets for £5 each. The prizes cost £400. He gives 55% of the profit to Charity A and 45% of the profit to Charity B. Work out how much each charity receives.
Answer:
Step-by-step explanation:
The total revenue from ticket sales is:
300 x £5 = £1500
The profit is the revenue minus the cost of the prize:
Profit = £1500 - £400 = £1100
Charity A receives 55% of the profit:
55% of £1100 = £605
Charity B receives 45% of the profit:
45% of £1100 = £495
Therefore, Charity A receives £605 and Charity B receives £495.
What is the value of
∠FDE given the following image?
The value of ∠FDE is 36°
Define the term angles?An angle is a geometric figure formed by two rays, or lines that extend infinitely in opposite directions, that share a common endpoint called the vertex. The measure of an angle is determined by the amount of rotation between the two rays.
Here given a right angle ∠CDE = 90°
So, we can say that,
∠CDF + ∠FDE = ∠CDE
(2x)° + (x+9)° = 90°
(3x + 9)° = 90°
Simplify it, x = 27°
So, the value of ∠FDE = (x+9)° = (27+9)° = 36°
Therefore, the value of ∠FDE is 36°
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The angle FDE is 36°. The required answer for the given question is option (A). 36°.
What is the value of <FDE?Trigonometry angles are the angles provided by the trigonometric function ratios. Trigonometry is the study of the connection between angles and triangle sides. Angle values vary from 0 to 360 degrees.
An angle is a shape in geometry made by two rays or lines that stretch indefinitely in opposite directions and have a common endpoint known as the vertex. The quantity of rotation among the two rays determines the size of an angle.
From the given figure,
∠CDF + ∠FDE = 90
Thus,
(2x)+(x+9) = 90
3x + 9 = 90
3x = 81
x = 27
Then we will have that the angle FDE is:
∠FDE = (27) + 9
∠FDE = 36
The angle of FDE is 36°
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state the meaning of the central limit theorem in your own words. how important is it to the development and use of statistical quality control techniques?
The central limit theorem is a statistical theory that specifies the probability distribution of a sum or average of several random variables whose distribution is not known.
It is an important theorem since it is utilized to help forecast or estimate the behavior of a specific set of data.
This theorem holds that when you take repeated samples of the same size from a population with a finite standard deviation, the means of those samples will be normally distributed, with a mean equal to the population mean and a standard deviation equal to the population standard deviation divided by the square root of the sample size.
Further more, the theorem indicates that the larger the sample size, the more closely the sample mean distribution will approximate a normal distribution.
This is why it is vital in the development and use of statistical quality control techniques, since they rely on correct assumptions about the population’s normality.
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Clare is cycling at a speed of 12 miles per hour. If she starts at a position chose as zero, what will her position be after 45 minutes?
Answer: 9 miles
Step-by-step explanation: The speed of 12 miles per hour means that for every hour, Clare is 12 miles further from the starting point. 1 hour = 12 miles Since an hour is equivalent to 60 minutes, 60 mins = 12 miles We can divide both sides by 60 to find the distance travelled per minute. 1 min = 12 ÷60= 0.2 miles Multiply both sides by 45 to find the distance travelled in 45 minutes: 45 mins = 0.2(45)= 9 miles Given that the starting position is at zero, Clare's position is at 9 miles after 45 minutes.
6. Martin has a business washing cars. Last year he washed 20 cars a week. This year, he wants to increase his business to 1.200 cars a year. How many cars will he have to wash each month on average?
Martin will have to wash 96 cars each month on average to meet his goal of washing 1,200 cars this year.
What is average ?
Average, also known as mean, is a statistical measure that represents the central value of a dataset. It is calculated by adding up all the values in the dataset and dividing by the total number of values. The average can be used to provide a general idea of the value of the dataset and to compare different datasets. There are different types of averages, including arithmetic mean, geometric mean, and median.
According to the question:
To find out how many cars Martin will have to wash each month on average, we need to first find out how many weeks there are in a year:
52 weeks/year
Then we can use this information to calculate how many cars Martin will have to wash each week:
1,200 cars/year ÷ 52 weeks/year = 23.08 cars/week
Since Martin cannot wash a fraction of a car, he will have to round up to 24 cars/week.
Finally, we can calculate how many cars Martin will have to wash each month on average:
24 cars/week x 4 weeks/month = 96 cars/month
Therefore, Martin will have to wash 96 cars each month on average to meet his goal of washing 1,200 cars this year.
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a german shepherd puppy weighed 25 pounds at 4 months old and 31 pounds at 5 months old. what is the percent increase or decrease of its weight? show hints
Answer:
24% increase
Step-by-step explanation:
percent change = (new value - old value)/(old value) × 100%
A positive percent change is a percent increase.
A negative percent change is a percent decrease.
In this problem:
new value = 31
old value = 25
percent change = (31 - 25)/(25) × 100%
percent change = 24%
Since the percent change is positive, the percent change is a
24% increase
The percentage change in the weight of a German Shepherd puppy from 4 months to 5 months is the an 24% increase in the puppy's weight in 1 month.
The percentage change in the weight of a German Shepherd puppy from 4 months to 5 months is the difference between the two values (31 - 25 = 6) divided by the starting weight (25). This gives us 6/25 = 0.24, or a 24% increase in the puppy's weight in 1 month.
To explain this further, let's look at an example. If a puppy weighed 25 pounds at 4 months, and it gained 6 pounds over the course of the following month, it would weigh 31 pounds at 5 months. To calculate the percentage increase, take the difference in weight (6 pounds) and divide it by the starting weight (25 pounds). This gives us 6/25 = 0.24, or a 24% increase in the puppy's weight.
To calculate the percentage decrease, use the same steps as above, but subtract the starting weight from the final weight instead. For example, if a puppy weighed 25 pounds at 4 months and lost 6 pounds over the course of the following month, it would weigh 19 pounds at 5 months. The percentage decrease would be calculated as (25 - 19)/25 = 0.24, or a 24% decrease in the puppy's weight.
In summary, the percentage change in the weight of a German Shepherd puppy from 4 months to 5 months is the difference between the two values (31 - 25 = 6) divided by the starting weight (25). This gives us 6/25 = 0.24, or a 24% increase in the puppy's weight in 1 month.
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LANGUAGE ARTS On Monday, 86 science fiction books were sold at a book sale. This is 8 more than twice the amount sold on Thursday. How many science fiction books were sold on Thursday?
In conclusion 39 science fiction books were sold on Thursday.
How to solve and what does algebra mean?
Let's use algebra to solve this problem. Let x be the number of science fiction books sold on Thursday. Then we know that:
86 = 8 + 2x
We can solve for x by first subtracting 8 from both sides:
78 = 2x
Then dividing both sides by 2:
x = 39
Therefore, 39 science fiction books were sold on Thursday.
Algebra is a branch of mathematics that deals with the study of symbols and the rules for manipulating those symbols. It involves using letters and other symbols to represent variables and quantities in equations and formulas.
Algebra is used in a wide range of fields, including mathematics, science, engineering, and economics, and it is an essential tool for solving many real-world problems.
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