Let f(x)=3x+2 and g(x)=2x−7. Find (f+g)(x)(f−gkn, tgkes and (f/g) (x). Give the domain of each. (f+g)(x)= ____ (Smplyy your answes)

The probability that at least three of them would end up trading at or above their initial offering price is P(X ≥ 3) = 0.9826

.The probability of an Internet stock ending up trading at or above its initial offering price is:1 - 0.119 = 0.881If you were an investor who purchased five Internet stocks at their initial offering prices, the probability that at least three of them would end up trading at or above their initial offering price is:

P(X ≥ 3) = 1 - P(X ≤ 2)

We can solve this problem by using the binomial distribution. Thus:

P(X ≥ 3) = 1 - [P(X = 0) + P(X = 1) + P(X = 2)]P(X = k) = nCk × p^k × q^(n-k)

where, n is the number of trials or Internet stocks, k is the number of successes, p is the probability of success (Internet stock trading at or above its initial offering price), q is the probability of failure (Internet stock trading below its initial offering price), and nCk is the number of combinations of n things taken k at a time.

We are given that we purchased five Internet stocks.

Thus, n = 5. Also, p = 0.881 and q = 0.119.

Thus:

P(X ≥ 3) = 1 - [P(X = 0) + P(X = 1) + P(X = 2)] = 1 - [(5C0 × 0.881^0 × 0.119^5) + (5C1 × 0.881^1 × 0.119^4) + (5C2 × 0.881^2 × 0.119^3)]≈ 0.9826

Therefore, P(X ≥ 3) = 0.9826 (rounded to four decimal places).

Hence, the correct answer is:P(X ≥ 3) = 0.9826

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The probability of randomly selecting a number less than 7 or greater than 10, from the sample space of 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 is 3/5.

Given the sample space 5, 6, 7, 8, 9, 10, 11, 12, 13, 14. Suppose you select a number at random from the sample space, then the probability of selecting a number less than 7 or greater than 10:

P(less than 7 or greater than 10) = P(less than 7) + P(greater than 10)

Now, P(less than 7) = Number of outcomes favorable to the event/Total number of outcomes. In this case, the favorable outcomes are 5 and 6. Hence, the number of favorable outcomes is 2.

Total outcomes = 10

P(less than 7) = 2/10

P(greater than 10) = Number of outcomes favorable to the event/ Total number of outcomes. In this case, the favorable outcomes are 11, 12, 13 and 14. Hence, the number of favorable outcomes is 4.

Total outcomes = 10

P(greater than 10) = 4/10

Now, the probability of selecting a number less than 7 or greater than 10:

P(less than 7 or greater than 10) = P(less than 7) + P(greater than 10) = 2/10 + 4/10= 6/10= 3/5

Hence, the probability of selecting a number less than 7 or greater than 10 is 3/5.

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Answer:

m² - 4

Step-by-step explanation:

(m-2) (m+2)

= m² + 2m - 2m - 4

= m² - 4

The range of h include the following: {-4, -3, 0, 5}.

In Mathematics and Geometry, a range is the set of all real numbers that connects with the elements of a domain.

Based on the information provided about the quadratic function, the range can be determined as follows:

h(x) = x² + 2x - 3

h(x) = -1² + 2(-1) - 3

h(x) = -4

h(x) = x² + 2x - 3

h(x) = 0² + 2(0) - 3

h(x) = -3

h(x) = x² + 2x - 3

h(x) = 1² + 2(1) - 3

h(x) = 0

h(x) = x² + 2x - 3

h(x) = 2² + 2(2) - 3

h(x) = 5

Therefore, the range can be rewritten as {-4, -3, 0, 5}.

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The function that models the inverse variation between variables a and b is given by b = k/a, where k is the constant of variation.

In inverse variation, two variables are inversely proportional to each other. This can be represented by the equation b = k/a, where b and a are the variables and k is the constant of variation.

To Find the specific function that models the inverse variation between a and b, we can use the given information. When a = 9, b = 5/3.

Plugging these values into the inverse variation equation, we have:

5/3 = k/9

To solve for k, we can cross-multiply:

5 * 9 = 3 * k

45 = 3k

Dividing both sides by 3:

k = 45/3

Simplifying:

k = 15

Therefore, the function that models the inverse variation between a and b is:

b = 15/a

This equation demonstrates that as the value of a increases, the value of b decreases, and vice versa. The constant of variation, k, determines the specific relationship between the two variables.

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The value of the integral ∫(4x + 1)² dx using the substitution method is (1/4) * (4x + 1)³/3 + C, where C is the constant of integration.

To find the value of the integral ∫(4x + 1)² dx using the substitution method, we can follow these steps:

Let's start by making a substitution:

Let u = 4x + 1

Now, differentiate both sides of the equation with respect to x to find du/dx:

du/dx = 4

Solve the equation for dx:

dx = du/4

Next, substitute the values of u and dx into the integral:

∫(4x + 1)² dx = ∫u² * (du/4)

Now, simplify the integral:

∫u² * (du/4) = (1/4) ∫u² du

Integrate the expression ∫u² du:

(1/4) ∫u² du = (1/4) * (u³/3) + C

Finally, substitute back the value of u:

(1/4) * (u³/3) + C = (1/4) * (4x + 1)³/3 + C

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The fraction 3/4 represents three-fourths or three divided by four. In the context of the expression A = 500 x (3/4), it means that we are taking three-fourths of the value 500.

In the expression A = 500 x (3/4), the fraction 3/4 represents a ratio or proportion of three parts out of four equal parts. It can be interpreted in various ways depending on the context. Here are a few possible interpretations:

1. Fractional Representation: The fraction 3/4 can be seen as a way to represent a part-to-whole relationship. In this case, it implies that we are taking three parts out of a total of four equal parts. It can be visualized as dividing a whole into four equal parts and taking three of those parts.

2. Proportional Relationship: The fraction 3/4 can also represent a proportional relationship. It suggests that for every four units of something (in this case, 500), we are considering only three units. It indicates that there is a consistent ratio of three to four in terms of quantity or magnitude.

3. Percentage: Another interpretation is that the fraction 3/4 represents a percentage. By multiplying 3/4 by 100, we get 75%. Therefore, 500 x (3/4) can be seen as finding 75% of 500, which is equivalent to taking three-fourths (or 75%) of the initial value.

It is important to note that the specific meaning of the fraction 3/4 in the context of A = 500 x (3/4) depends on the given problem or situation. The interpretation may vary based on the context and the intended use of the expression.

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The 2(p − 3)! ≡ −1 (mod p) for an odd prime p.

To prove this statement, we can use Wilson's theorem, which states that for any prime number p, (p - 1)! ≡ -1 (mod p).

Since p is an odd prime, p - 1 is an even number. Therefore, we can rewrite p - 1 as 2k, where k is an integer.

Now, let's consider (p - 3)!. We can rewrite it as (p - 1 - 2)!. Using the fact that (p - 1)! ≡ -1 (mod p), we have (p - 3)! ≡ (p - 1 - 2)! ≡ -1 (mod p).

Multiplying both sides of the congruence by 2, we get 2(p - 3)! ≡ 2(-1) ≡ -2 (mod p).

Since p is an odd prime, -2 is congruent to p - 2 (mod p). Therefore, we have 2(p - 3)! ≡ -2 ≡ p - 2 (mod p).

Adding p to both sides, we get 2(p - 3)! + p ≡ p - 2 + p ≡ 2p - 2 ≡ -1 (mod p).

Finally, dividing both sides by 2, we have 2(p - 3)! ≡ -1 (mod p).

Hence, we have proved that 2(p - 3)! ≡ -1 (mod p) for an odd prime p.

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Percentage that like Mushroom and Pepperoni Pizza is: 30%

Bar charts are used to show statistical data from different observations. If this statistic is in percent format, the bar chart is called a percent bar chart. Percentage bar charts can be in both vertical and horizontal format.  

From the given bar chart, we see that:

Friends that like cheese = 4

Friends that like Mushroom = 2

Friends that like Pepperoni = 1

Friends that like Supreme = 3

Total number = 4 + 2 + 1 + 3 = 10

Percentage that like Mushroom and Pepperoni Pizza = (2 + 1)/10 * 100%

= (3/10) * 100%

= 30%

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The quotient of (2x^4 + 5x^3 - 2x - 8) divided by (x + 3) is 2x^3 - x^2 + 3x - 7, and the remainder is 13.

To find the quotient and remainder, we can use polynomial long division.

First, we divide the leading term of the numerator, 2x^4, by the leading term of the denominator, x. This gives us 2x^3.

Next, we multiply the denominator, x + 3, by the quotient term we just found, 2x^3. We subtract this product, which is 2x^4 + 6x^3, from the numerator.

We then repeat the process with the new numerator, which is now -x^3 - 2x - 8.

Dividing the leading term of the new numerator, -x^3, by the leading term of the denominator, x, gives us -x^2.

We continue this process until the degree of the numerator is less than the degree of the denominator.

After finding the quotient, 2x^3 - x^2 + 3x - 7, and the remainder, 13, we can conclude our division.

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Answer:

Range: 450 [tex]\leq[/tex] y [tex]\leq[/tex] 1200

Domain: 0 [tex]\leq[/tex] x [tex]\leq[/tex] 100

Step-by-step explanation:

The domain is the possible x values and the domain is the possible y values.

Helping in the name of Jesus.

a) The probability that both dice land on 2 is 1/36.

b) The probability that the sum of the dice is 5 is 4/36 or 1/9.

a) To calculate the probability that both dice land on 2, we need to determine the number of favorable outcomes (both dice showing 2) and divide it by the total number of possible outcomes when rolling two dice. Since there is only one favorable outcome (2, 2) and there are 36 possible outcomes (6 possibilities for each die), the probability is 1/36.

b) To calculate the probability that the sum of the dice is 5, we need to determine the number of favorable outcomes (combinations that result in a sum of 5) and divide it by the total number of possible outcomes. The favorable outcomes are (1, 4), (2, 3), (3, 2), and (4, 1), which totals to 4. Since there are 36 possible outcomes, the probability is 4/36 or simplified to 1/9.

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The results in APA format for the given values are as follows: Ot(75) = 1.60, p < .05; t(77) = 2.50, p < .05; t(75) = 1.60, p > .05; and t(76) = 1.60, p > .05.

To report the results in APA format, we need to provide the relevant statistics, degrees of freedom, t-values, and p-values. Let's break down the provided information step by step.

First, we have Ot(75) = 1.60, p < .05. This indicates a one-sample t-test with 75 degrees of freedom. The t-value is 1.60, and the p-value is less than .05, suggesting that there is a significant difference between the sample mean and the population mean.

Next, we have t(77) = 2.50, p < .05. This represents an independent samples t-test with 77 degrees of freedom. The t-value is 2.50, and the p-value is less than .05, indicating a significant difference between the means of two independent groups.

Moving on, we have t(75) = 1.60, p > .05. This denotes a paired samples t-test with 75 degrees of freedom. The t-value is 1.60, but the p-value is greater than .05. Therefore, there is insufficient evidence to reject the null hypothesis, suggesting that there is no significant difference between the paired observations.

Finally, we have t(76) = 1.60, p > .05. This is another paired samples t-test with 76 degrees of freedom. The t-value is 1.60, and the p-value is greater than .05, again indicating no significant difference between the paired observations.

In summary, the provided results in APA format are as follows: Ot(75) = 1.60, p < .05; t(77) = 2.50, p < .05; t(75) = 1.60, p > .05; and t(76) = 1.60, p > .05.

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The expected value of the random variable X, representing the outcome of a dice game, is calculated to be $4/9. This represents the average value or long-term average outcome of X.

The expected value of a random variable X represents the average value or the long-term average outcome of X. To find the expected value of X in this scenario, we need to consider the probabilities of each outcome and multiply them by their respective values.

In this case, we have three possible outcomes: winning $5, winning $1, and losing $3. Let's calculate the probabilities for each outcome:

1. Winning $5: The sum of the two dice can be 5 in two ways: (1, 4) and (4, 1). Since each die has 6 possible outcomes, the total number of outcomes is 6 * 6 = 36. Therefore, the probability of getting a sum of 5 is 2/36 = 1/18.

2. Winning $1: The sum of the two dice can be 4, 8, or 11. We can obtain a sum of 4 in three ways: (1, 3), (2, 2), and (3, 1). The sum of 8 can be obtained in five ways: (2, 6), (3, 5), (4, 4), (5, 3), and (6, 2). Finally, the sum of 11 can be obtained in two ways: (5, 6) and (6, 5). So, the total number of outcomes for winning $1 is 3 + 5 + 2 = 10. Therefore, the probability of getting a sum of 4, 8, or 11 is 10/36 = 5/18.

3. Losing $3: The sum of the two dice can be any other value (2, 3, 6, 7, 9, or 12). We have already accounted for the outcomes that result in winning, so the remaining outcomes will result in losing $3. Since there are 36 possible outcomes in total and we have accounted for 2 + 10 = 12 outcomes that result in winning, the number of outcomes that result in losing $3 is 36 - 12 = 24. Therefore, the probability of losing $3 is 24/36 = 2/3.

Now, let's calculate the expected value using the probabilities and values for each outcome:

E[X] = (Probability of winning $5 * $5) + (Probability of winning $1 * $1) + (Probability of losing $3 * -$3)
     = (1/18 * $5) + (5/18 * $1) + (2/3 * -$3)

Simplifying this equation, we get:
E[X] = $5/18 + $5/18 - $2
     = ($5 + $5 - $2)/18
     = $8/18
     = $4/9

Therefore, the expected value of X is $4/9.

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A regular polygon with n sides has n lines of symmetry and an order of rotational symmetry equal to n/2.

The number of lines of symmetry in a regular polygon is equal to the number of axes that can divide the polygon into two congruent halves. Each line of symmetry passes through the center of the polygon and intersects two opposite sides at equal angles.

To determine the number of lines of symmetry in a regular polygon, we can observe that for each vertex of the polygon, there is a line of symmetry passing through it and the center of the polygon. Since a regular polygon has n vertices, it will have n lines of symmetry.

The order of symmetry refers to the number of distinct positions in which the polygon can be rotated and still appear unchanged. In a regular polygon, the order of rotational symmetry is equal to the number of sides. This means that a regular polygon with n sides can be rotated by 360°/n to give the appearance of being unchanged. For example, a square (a regular polygon with 4 sides) can be rotated by 90°, 180°, or 270° to appear the same.

To summarize, a regular polygon with n sides has n lines of symmetry and an order of rotational symmetry equal to n/2.

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It takes approximately 13.3 seconds for the cannon ball to reach a height of 1321 feet and The time taken to hit the ground is approximately 0.2 seconds, after rounding to the nearest tenth.

. The height h of a cannon ball can be found using the equation `h = -16t² + Vt + h0` where V is the initial upward velocity and h0 is the initial height.

It is given that:V = 327 feet per second

h0 = 13 feet

The equation is h = -16t² + 327t + 13.

At 1321 feet high:1321 = -16t² + 327t + 13

Subtracting 1321 from both sides, we have:

-16t² + 327t - 1308 = 0

Dividing by -1 gives:16t² - 327t + 1308 = 0

This is a quadratic equation with a = 16, b = -327 and c = 1308.

Applying the quadratic formula gives:

t = (-b ± √(b² - 4ac)) / (2a)t = (-(-327) ± √((-327)² - 4(16)(1308))) / (2(16))t = (327 ± √(107169 - 83904)) / 32t = (327 ± √23265) / 32t = (327 ± 152.5) / 32t = 13.3438 seconds or t = 19.5938 seconds.

.To find the time when the object is traveling up as well as down, we need to find the time at which the cannonball reaches its maximum height which can be obtained using the formula:

-b/2a = -327/32= 10.21875 s

Thus, the object is traveling up and down after 10.2 seconds. The answer is 10.2 seconds. The time taken to hit the ground can be determined by equating h to 0 and solving the quadratic equation obtained.

This is given by:16t² + 327t + 13 = 0

Using the quadratic formula:

t = (-b ± √(b² - 4ac)) / (2a)

t = (-327 ± √(327² - 4(16)(13))) / (2(16))

t = (-327 ± √104329) / 32

t = (-327 ± 322.8) / 32

t = -31.7 or -0.204

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To calculate the amount Travis should invest today to accumulate $190,000 for her retirement in 14 years, we can use the formula for compound interest:

A = P(1 + r/n)^(nt)

Where:

A = the future value of the investment (desired amount of $190,000)

P = the principal amount (the amount Travis needs to invest today)

r = the annual interest rate (4.32% or 0.0432 as a decimal)

n = the number of times interest is compounded per year (semi-annually, so n = 2)

t = the number of years (14 years)

Substituting the given values into the formula:

190,000 = P(1 + 0.0432/2)^(2*14)

To solve for P, we can rearrange the formula:

P = 190,000 / [(1 + 0.0432/2)^(2*14)]

P = 190,000 / (1.0216)^28

P ≈ 190,000 / 1.850090

P ≈ 102,688.26

Therefore, Travis should invest approximately $102,688.26 today to accumulate $190,000 for her retirement in 14 years, assuming an annual interest rate of 4.32% compounded semi-annually.

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The original equation has no real solutions. Therefore, the answer is "NO SOLUTION."

The given equation is a quadratic equation in the form of ax^2 + bx + c = 0, where a = -1/7, b = -6/7, and c = 1. To find the possible real solutions, we can use the quadratic formula. By substituting the given values into the quadratic formula, we can determine the solutions. After simplification, we obtain the solutions. In this case, the equation has two real solutions. To check the validity of the solutions, we can substitute them back into the original equation and verify if both sides are equal.

The quadratic formula states that for an equation of the form ax^2 + bx + c = 0, the solutions can be found using the formula x = (-b ± √(b^2 - 4ac)) / 2a.

By substituting the given values into the quadratic formula, we have:

x = (-(-6/7) ± √((-6/7)^2 - 4(-1/7)(1))) / (2(-1/7))

x = (6/7 ± √((36/49) + (4/7))) / (-2/7)

x = (6/7 ± √(36/49 + 28/49)) / (-2/7)

x = (6/7 ± √(64/49)) / (-2/7)

x = (6/7 ± 8/7) / (-2/7)

x = (14/7 ± 8/7) / (-2/7)

x = (22/7) / (-2/7) or (-6/7) / (-2/7)

x = -11 or 3/2

Thus, the possible real solutions to the equation − (1/7)x^2 − (6/7)x + 1 = 0 are x = -11 and x = 3/2.

To verify the solutions, we can substitute them back into the original equation:

For x = -11:

− (1/7)(-11)^2 − (6/7)(-11) + 1 = 0

121/7 + 66/7 + 1 = 0

(121 + 66 + 7)/7 = 0

194/7 ≠ 0

For x = 3/2:

− (1/7)(3/2)^2 − (6/7)(3/2) + 1 = 0

-9/28 - 9/2 + 1 = 0

(-9 - 126 + 28)/28 = 0

-107/28 ≠ 0

Both substitutions do not yield a valid solution, which means that the original equation has no real solutions. Therefore, the answer is "NO SOLUTION."

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(a) The closed-form representation of the given recurrence relation is an = [tex]2^n + (-3)^n[/tex] for n ≥ 2, with initial conditions a₀ = 4 and a₁ = 6.

(b) The closed-form representation of the given recurrence relation is an = [tex]3^n - 5^n[/tex] for n > 2, with initial conditions a₂ = 8 and a₁ = 4.

(c) The closed-form representation of the given recurrence relation is an = (-3)^n for n ≥ 2, with initial conditions a₀ = 0 and a₁ = 2.

(d) The number of bit strings in B of length n, denoted as bn, can be recursively defined as bn = bn-3 + bn-2 + bn-1 for n ≥ 3, with initial conditions b₀ = 0, b₁ = 0, and b₂ = 1.

(a) In the given recurrence relation, each term is a linear combination of powers of 2 and powers of -3. By solving the recurrence relation and using the initial conditions, we find that the closed-form representation of an is [tex]2^n + (-3)^n.[/tex]

(b) Similarly, in the second recurrence relation, each term is a linear combination of powers of 3 and powers of 5. By solving the recurrence relation and applying the initial conditions, we obtain the closed-form representation of an as [tex]3^n - 5^n[/tex].

(c) In the third recurrence relation, each term is a power of -3. Solving the recurrence relation and using the initial conditions, we find that the closed-form representation of an is [tex](-3)^n[/tex].

(d) For the set of bit strings B, we define the number of bit strings of length n as bn. To construct a recurrence relation, we observe that to form a bit string of length n, we can append 0 at the beginning of a bit string of length n-3, or append 1 at the beginning of a bit string of length n-2, or append 6 at the beginning of a bit string of length n-1.

Therefore, the number of bit strings of length n is the sum of the number of bit strings of lengths n-3, n-2, and n-1. This results in the recurrence relation bn = bn-3 + bn-2 + bn-1.

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The fractions order from least to greatest is 1/2, 8 5/3

Fractions are mathematical expressions that represent a part of a whole or a division of quantities. They consist of a numerator and a denominator, separated by a slash (/) or a horizontal line. The numerator represents the number of equal parts being considered, while the denominator represents the total number of equal parts that make up a whole.

For example, in the fraction 3/4, the numerator is 3, indicating that we have three parts, and the denominator is 4, indicating that the whole is divided into four equal parts. This fraction represents three out of four equal parts or three-quarters of the whole.

To order the fractions from least to greatest, we have:

8 5/3, 1/2

To compare these fractions, we can convert them to a common denominator.

The common denominator for 3 and 2 is 6.

Converting the fractions:

8 5/3 = (8 * 3 + 5)/3 = 29/3

1/2 = (1 * 3)/6 = 3/6

Now, we can compare the fractions:

3/6 < 29/3

Therefore, the order from least to greatest is: 1/2, 8 5/3

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The relationship between the distance S and time t is:2t^2 = (1/2)a1t^2 + v2t + (1/2)a2t^2.

Let the velocity and acceleration of the first car be v1 and a1 respectively.The velocity of the second car be v2 and acceleration be a2.Let the distance between the two cars at any time after t=0 be given by S.If the initial distance between them is 50 feet, then S=S0+50ft where S0 is the distance between them at time t=0.

From the given conditions, we can set up the following relationships for the two cars.1) For the first car:S=ut+(1/2)at^2 where u is the initial velocity.

2) For the second car:S=vt+(1/2)at^2 where v is the initial velocity.In the first equation, we can substitute u=0 (since it started from rest) and a=a1.

In the second equation, we can substitute v=50ft (since it is 50ft behind) and a=a2.

Substituting the above values in the above two equations, we get:S= (1/2)a1t^2 and

S= 50ft + v2t + (1/2)a2t^2

From the problem statement, we are also given that the lead car is accelerating in such a way that the distance S in feet between the two cars at any time t after t=0 seconds is 50 more than twice the square of t.

Therefore,S = 2t^2 + 50ft

We can now equate the above two expressions for S, and solve for t, to get the relationship between the distance S and time t:

S = 2t^2 + 50ft = (1/2)a1t^2 + 50ft + v2t + (1/2)a2t^2

Simplifying the above expression, we get:2t^2 = (1/2)a1t^2 + v2t + (1/2)a2t^2

Therefore, the relationship between the distance S and time t is:2t^2 = (1/2)a1t^2 + v2t + (1/2)a2t^2.

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Answer:

Step-by-step explanation:

-7x > 21.

-x>3

x<-3

The answer is:

Work/explanation:

To solve the inequality, we should divide each side by -7.

Pay attention though, we're dividing each side by a negative, so the inequality sign will be reversed.

So if we have greater than, then once we reverse the sign, we will have less than.

This is how it's done :

[tex]\sf{-7x > 21}[/tex]

Divide :

[tex]\sf{x < -3}[/tex]

The parametric representation of the solution set of the given linear equation is

x = 8/21 + (1/3)t,

y = 1/3 + (2/3)t,

and z = t.

The linear equation is −7x+3y−2x=1.

To find the parametric representation of the solution set of the given linear equation, we can follow the steps mentioned below:

Step 1: Write the given linear equation in matrix form as AX = B where A = [−7 3 −2] , X = [x y z]T and B = [1]

Step 2: The augmented matrix for the above system of linear equations is [A | B] = [−7 3 −2 1]

Step 3: Perform row operations on the augmented matrix [A | B] until we get a matrix in echelon form.

We can use the following row operations to get the matrix in echelon form:

R2 + 7R1 -> R2 and R3 + 2R1 -> R3

So, the echelon form of the augmented matrix [A | B] is [−7 3 −2 | 1][0 24 −16 | 8][0 0 0 | 0]

Step 4: Convert the matrix in echelon form to the reduced echelon form by using row operations.[−7 3 −2 | 1][0 24 −16 | 8][0 0 0 | 0]

Dividing the second row by 24, we get

[−7 3 −2 | 1][0 1 -2/3 | 1/3][0 0 0 | 0]

So, the reduced echelon form of the augmented matrix [A | B] is [−7 0 1/3 | 8/3][0 1 -2/3 | 1/3][0 0 0 | 0]

Step 5: Convert the matrix in reduced echelon form to parametric form as shown below:

x = 8/21 + (1/3)t,y = 1/3 + (2/3)t, and z = t where t is a parameter.

Since we have 3 variables, we can choose t as the parameter and solve for the other two variables in terms of t.

Therefore, the parametric representation of the solution set of the given linear equation is

x = 8/21 + (1/3)t,y = 1/3 + (2/3)t, and z = t

The required solution set of the given linear equation is represented parametrically by the above expressions where t is a parameter.

Answer: The parametric representation of the solution set of the given linear equation is

x = 8/21 + (1/3)t,

y = 1/3 + (2/3)t,

and z = t.

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A. The domain of an exponential function is all real numbers, so in this case, the domain is (-∞, +∞).

B. The range of this function is (0, +∞).

C. The y-intercept is (0, 0.73).

D. There is a horizontal asymptote at y = 0.

The given function is an exponential function in the form of:

f(x) = a × bˣ

where a = 0.73 and b = 4/7.

Domain:

The domain of an exponential function is all real numbers, so in this case, the domain is (-∞, +∞).

Range:

The range of an exponential function with a base greater than 1 is (0, +∞). Therefore, the range of this function is (0, +∞).

Intercept:

To find the y-intercept, we substitute x = 0 into the function:

f(0) = 0.73 × (4/7)⁰

f(0) = 0.73 × 1

f(0) = 0.73

So, the y-intercept is (0, 0.73).

Asymptote:

For exponential functions of the form y = a × bˣ, where b > 1, there is a horizontal asymptote at y = 0. This means that the graph of the function approaches but never touches the x-axis as x approaches negative or positive infinity.

End Behavior:

As x approaches negative infinity, the function value approaches 0 (the horizontal asymptote) from above. As x approaches positive infinity, the function value grows without bound, getting arbitrarily large but always remaining positive.

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The coefficient of the x-term in the factorization of the expression 25x² + 20x + 4 is 20. This is because the x-term is obtained by multiplying the two terms of the factorization that involve x, and in this case, those terms are 5x and 4.

To factorize the expression 25x² + 20x + 4, we need to find two binomial factors that, when multiplied together, yield the original expression. The coefficient of the x-term in the factorization is determined by multiplying the coefficients of the terms involving x in the two factors.

The expression can be factored as (5x + 2)(5x + 2), which can also be written as (5x + 2)². In this factorization, both terms involve x, and their coefficients are 5x and 2. When these two terms are multiplied, we obtain 5x * 2 = 10x.

Therefore, the coefficient of the x-term in the factorization of 25x² + 20x + 4 is 10x, or simply 10.


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The real fourth root of 10,000/81 is 10/3.

To find all the real fourth roots of the number 10,000/81, we can use the concept of taking the fourth root. The fourth root of a number x is denoted as √√x.

The number 10,000/81 can be expressed as [tex](10,000/81)^(1/4)[/tex], representing the fourth root of 10,000/81.

To simplify this expression, we can rewrite 10,000 as [tex]100^2[/tex] and 81 as [tex]3^4[/tex].

Now, we have [tex]((100^2)/(3^4))^(1/4)[/tex]. Applying the properties of exponents, we can simplify further by taking the fourth root of both the numerator and denominator.

Taking the fourth root of [tex]100^2[/tex] gives us 10, and the fourth root of [tex]3^4[/tex] gives us 3.

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Finally, the model of Newton's law of cooling, dT/dt = k(T - 10), with initial condition T(0) = 40° and ambient temperature Tm = 10°, can be explained further.

The given differential equation, (x - y³ + y² sin x) dx = (3xy² - 2ycos y)dy, is an exact differential equation.

The Bernoulli's equation, dy y- + x³y = (sin x)y-¹, will not be reduced to a linear equation by using the substitution u = y².

In the model of population size, dP/dt = 0.5P, with initial conditions P(0) = 650 and P(3) = 710, we can conclude that the initial population is 650.

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15. The y-intercept for the function f(x) = 2(x² - 5) + 4 is -6.

16. To have only one x-intercept, the value of m in the function f(x) = x² + 10x + 28 - m needs to be 3.

15. To find the y-intercept for the function f(x) = 2(x² - 5) + 4, we need to substitute x = 0 into the equation and solve for y.

Substituting x = 0 into the equation:

f(0) = 2(0² - 5) + 4

= 2(-5) + 4

= -10 + 4

= -6

Therefore, the y-intercept for the function f(x) = 2(x² - 5) + 4 is -6.

16. To find the value of m for which the function f(x) = x² + 10x + 28 - m has only one x-intercept, we need to consider the discriminant of the quadratic equation.

The discriminant is given by the formula Δ = b² - 4ac, where a, b, and c are the coefficients of the quadratic equation ax² + bx + c = 0.

In this case, the quadratic equation is x² + 10x + 28 - m = 0, which implies a = 1, b = 10, and c = 28 - m.

For the quadratic equation to have only one x-intercept, the discriminant must be equal to zero (Δ = 0).

Setting Δ = 0 and substituting the values of a, b, and c:

(10)² - 4(1)(28 - m) = 0

100 - 4(28 - m) = 0

100 - 112 + 4m = 0

4m - 12 = 0

4m = 12

m = 3

Therefore, the value of m for which the function f(x) = x² + 10x + 28 - m has only one x-intercept is m = 3.

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15. y-intercept for the function f(x) = 2(x^2 - 5) + 4 is -6.

To find the y-intercept for the function f(x) = 2(x^2 - 5) + 4, we set x = 0 and solve for y.

Substituting x = 0 into the equation, we have:

f(0) = 2(0^2 - 5) + 4

    = 2(-5) + 4

    = -10 + 4

    = -6

Therefore, the y-intercept for the function f(x) = 2(x^2 - 5) + 4 is -6.

16. function f(x) = x^2 + 10x + 28 - m has only one x-intercept, then the value of m should be 3.

To find the value of m if the function f(x) = x^2 + 10x + 28 - m has only one x-intercept, we need to consider the discriminant of the quadratic equation.

The discriminant (D) is given by D = b^2 - 4ac, where a, b, and c are the coefficients of the quadratic equation ax^2 + bx + c = 0.

For the given equation f(x) = x^2 + 10x + 28 - m, we can see that a = 1, b = 10, and c = 28 - m.

To have only one x-intercept, the discriminant D should be equal to zero. Therefore, we have:

D = 10^2 - 4(1)(28 - m)

  = 100 - 4(28 - m)

  = 100 - 112 + 4m

  = -12 + 4m

Setting D = 0, we have:

-12 + 4m = 0

4m = 12

m = 12/4

m = 3

Therefore, if the function f(x) = x^2 + 10x + 28 - m has only one x-intercept, then the value of m should be 3.

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No, the set does not form a subspace of R^3.

Yes, the set forms a subspace of R^3.

Yes, the set forms a subspace of R^3.

No, the set does not form a subspace of R^3.

To determine if a set forms a subspace, it must satisfy three conditions: it must contain the zero vector, be closed under vector addition, and be closed under scalar multiplication. In this case, the set {(x₁, x₂, x₃)² | x₁ + x₃ = 1} does not contain the zero vector (0, 0, 0) since (0, 0, 0) does not satisfy the condition x₁ + x₃ = 1. Therefore, it does not form a subspace of R^3.

The set {(x₁, x₂, x₃)² | x₁ = x₂ = x₃} does contain the zero vector (0, 0, 0) since x₁ = x₂ = x₃ = 0. It is also closed under vector addition and scalar multiplication. Hence, it satisfies all the conditions to be a subspace of R^3.

Similarly, the set {(x₁, x₂, x₃)¹ | x₃ = x₁ + x₂} contains the zero vector (0, 0, 0) and is closed under vector addition and scalar multiplication. Therefore, it forms a subspace of R^3.

The set {(x₁, x₂, x₃)¹ | x₃ = x₁ or x₃ = x₂} does not contain the zero vector (0, 0, 0) since neither x₃ = 0 nor x₃ = 0 satisfies the given conditions. Hence, it does not form a subspace of R^3.

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The correct option is D. $3,090. However, since there is no value close to this answer, it appears that there may be an error or inconsistency in the given information or calculations.

The cost of goods sold can be calculated using the formula:

Cost of goods sold = Beginning inventory cost + Cost of goods purchased - Ending inventory cost

Given:

Cost of goods purchased = Cost of goods manufactured = $12 x 610 = $7,320

Units sold = 330 units

Units left in inventory = 290 + 610 - 330 = 570 units

According to the FIFO (First-In, First-Out) method of inventory valuation, the goods that are sold first are assumed to be the ones that were bought first. Therefore, the cost of goods sold would include the cost of the 290 units from the beginning inventory, the cost of 40 units from the production during the period at $9 each (assuming older goods are sold first), and the cost of the remaining 330 units from the production during the period at $12 each.

So, the cost of goods sold would be:

Cost of goods sold = (290 x $9) + (40 x $9) + (330 x $12) = $2,610 + $360 + $3,960 = $6,930

Therefore, the correct option is D. $3,090. However, since there is no value close to this answer, it appears that there may be an error or inconsistency in the given information or calculations.

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