true/false. one of the assumptions for multiple regression is that the distribution of each explanatory variable is normal.

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Answer 1

The statement is False.

One of the assumptions for multiple regression is that the residuals (i.e., the differences between the observed values and the predicted values) are normally distributed, but there is no assumption that the explanatory variables themselves are normally distributed. However, if the response variable is not normally distributed, it may be appropriate to transform it or use a different type of regression.

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Related Questions

Polygon PQRS is a rectangle inscribed in a circle centered


at the origin. The slope of PS is 0. Find the coordinates of


points P, Q , and R in terms of a and b.

Answers

We have four possible combinations for the coordinates of points P, Q, and R:

P(a, 0), Q(-a, sqrt(4a^2 - 4b^2)), R(-a, 2b)P(-a, 0), Q(a, sqrt(4a^2 - 4b^2)), R(a, 2b)P(a, 0), Q(-a, -sqrt(4a^2 - 4b^2)), R(-a, -2b)P(-a, 0), Q(a, -sqrt(4a^2 - 4b^2)), R(a, -2b).

Note: The coordinates of P, Q, and R can vary depending on the values of a and b, but the relationships between them remain the same.

To find the coordinates of points P, Q, and R in terms of a and b, let's analyze the given information about the rectangle and its relationship with the circle.

Rectangle Inscribed in a Circle:

If a rectangle is inscribed in a circle, then the diagonals of the rectangle are the diameters of the circle. Therefore, the line segment PR is a diameter of the circle.

Slope of PS is 0:

Given that the slope of PS is 0, it means that PS is a horizontal line passing through the origin (0, 0). Since the line segment PR is a diameter, the midpoint of PR will also be the center of the circle, which is the origin.

With these observations, we can proceed to find the coordinates of points P, Q, and R:

Point P:

Point P lies on the line segment PR, and since PS is a horizontal line passing through the origin, the y-coordinate of point P will be 0. Therefore, the coordinates of point P are (x_p, 0).

Point Q:

Point Q lies on the line segment PS, which is a vertical line passing through the origin. Since the rectangle is symmetric with respect to the origin, the x-coordinate of point Q will be the negation of the x-coordinate of point P. Therefore, the coordinates of point Q are (-x_p, y_q), where y_q represents the y-coordinate of point Q.

Point R:

Point R lies on the line segment PR, and since the midpoint of PR is the origin, the coordinates of point R will be the negation of the coordinates of point P. Therefore, the coordinates of point R are (-x_p, -y_r), where y_r represents the y-coordinate of point R.

To determine the values of x_p, y_q, and y_r, we need to consider the relationship between the rectangle and the circle.

In a rectangle, opposite sides are parallel and equal in length. Since PQ and SR are opposite sides of the rectangle, they have the same length.

Let's denote the length of PQ and SR as 2a (twice the length of PQ) and the length of QR as 2b (twice the length of QR).

Since the rectangle is inscribed in a circle, the length of the diagonal PR will be equal to the diameter of the circle, which is 2r (twice the radius of the circle).

Using the Pythagorean theorem, we can express the relationship between a, b, and r:

(a^2) + (b^2) = r^2

Now, we can substitute the coordinates of points P, Q, and R into this relationship and solve for x_p, y_q, and y_r:

P: (x_p, 0)

Q: (-x_p, y_q)

R: (-x_p, -y_r)

Using the distance formula, we can write the equation for the relationship between a, b, and r:

(x_p^2) + (0^2) = (2a)^2

(-x_p^2) + (y_q^2) = (2b)^2

(-x_p^2) + (-y_r^2) = (2a)^2 + (2b)^2

Simplifying these equations, we get:

x_p^2 = 4a^2

x_p^2 - y_q^2 = 4b^2

x_p^2 + y_r^2 = 4a^2 + 4b^2

From the first equation, we can conclude that x_p = 2a or x_p = -2a.

If x_p = 2a, then substituting this into the second equation gives:

(2a)^2 - y_q^2 = 4b^2

4a^2 - y_q^2 = 4b^2

y_q^2 = 4a^2 - 4b^2

y_q = sqrt(4a^2 - 4b^2) or y_q = -sqrt(4a^2 - 4b^2)

Similarly, if x_p = -2a, then substituting this into the third equation gives:

(-2a)^2 + y_r^2 = 4a^2 + 4b^2

4a^2 + y_r^2 = 4a^2 + 4b^2

y_r^2 = 4b^2

y_r = 2b or y_r = -2b

Therefore, we have four possible combinations for the coordinates of points P, Q, and R:

P(a, 0), Q(-a, sqrt(4a^2 - 4b^2)), R(-a, 2b)

P(-a, 0), Q(a, sqrt(4a^2 - 4b^2)), R(a, 2b)

P(a, 0), Q(-a, -sqrt(4a^2 - 4b^2)), R(-a, -2b)

P(-a, 0), Q(a, -sqrt(4a^2 - 4b^2)), R(a, -2b)

Note: The coordinates of P, Q, and R can vary depending on the values of a and b, but the relationships between them remain the same.

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(1 point) for the function f(x)=x3−27x, its local maximum is

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The function f(x)=x3−27x has a local maximum at x=3.

To determine this, we can take the derivative of the function and set it equal to zero to find the critical points. The derivative of f(x) is f'(x)=3x2-27. Setting this equal to zero, we get 3x2-27=0, which simplifies to x2=9.
Taking the square root of both sides, we get x=±3. We can then use the second derivative test to determine that x=3 is a local maximum.
The second derivative of f(x) is f''(x)=6x, which is positive at x=3, indicating a concave up shape and a local maximum. Therefore, the local maximum of f(x) is at x=3.

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how do you distinguish between sr and lr cost functions? example?

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The terms "sr" and "lr" cost functions typically refer to "short-run" and "long-run" cost functions in economics. The distinction between the two depends on the time horizon over which the costs are being considered.

In the short run, some inputs are fixed and cannot be changed, while others are variable and can be adjusted. For example, in the short run, a factory may have fixed costs such as rent, property taxes, and insurance, while variable costs may include labor, raw materials, and utilities. The short-run cost function reflects how the total cost of production changes as the variable inputs are increased or decreased while the fixed inputs remain constant.

In the long run, all inputs are variable and can be adjusted. For example, in the long run, a factory may be able to build a larger building, buy more machines, or relocate to a cheaper area. The long-run cost function reflects how the total cost of production changes as all inputs are increased or decreased.

An example of a short-run cost function could be the cost of producing bread in a bakery, where the cost of flour, yeast, and electricity are variable costs, but the cost of rent for the bakery building is a fixed cost.

An example of a long-run cost function could be the cost of running a transportation company, where the cost of vehicles, fuel, and labor are all variable costs, but the cost of building a new headquarters or expanding the business into a new market are fixed costs.

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Express the limit as a definite integral. [Hint: Consider
f(x) = x8.]
lim n→[infinity]
n 3i8
n9
sum.gif
i = 1

Answers

The given limit can be expressed as the definite integral:

∫[0 to 1] 3x^8 dx

To express the limit as a definite integral, we can use the definition of a Riemann sum. Let's consider the function f(x) = x^8.

The given limit can be rewritten as:

lim(n→∞) Σ[i=1 to n] (3i^8 / n^9)

Now, let's express this limit as a definite integral. We can approximate the sum using equal subintervals of width Δx = 1/n. The value of i can be replaced with x = iΔx = i/n. The summation then becomes:

lim(n→∞) Σ[i=1 to n] (3(i/n)^8 / n^9)

This can be further simplified as:

lim(n→∞) (1/n) Σ[i=1 to n] (3(i/n)^8 / n)

Taking the limit as n approaches infinity, the sum can be written as:

lim(n→∞) (1/n) ∑[i=1 to n] (3(i/n)^8 / n) ≈ ∫[0 to 1] 3x^8 dx

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True or false? The logistic regression model can describe the probability of disease development, i.e. risk for the disease, for a given set of independent variables.

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The answer is True.

The logistic regression model is designed to describe the probability of a certain outcome (in this case, disease development) based on a given set of independent variables. It models the relationship between the independent variables and the probability of the outcome, which is the risk for the disease.

Logistic regression models the probability of the dependent variable being 1 (i.e., having the disease) as a function of the independent variables, using the logistic function. The logistic function maps any real-valued input to a value between 0 and 1, which can be interpreted as the probability of the dependent variable being 1.

Therefore, the logistic regression model can be used to estimate the risk of disease development based on a given set of independent variables.

By examining the coefficients of the independent variables in the logistic regression equation, we can identify which variables are associated with an increased or decreased risk of disease development.

This information can be used to develop strategies for preventing or treating the disease.

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Research question: Are more than half of all ring-tailed lemurs left hand dominant? A sample of 60 ring-tailed lemurs was obtained and each individual's hand preference (right/left) was recorded. Which of the following procedures should be conducted to directly address this research question? O Paired means t test O One sample proportion z test O One sample mean t test

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The procedure that should be conducted to directly address this research question is the one sample proportion z test. This is because the research question is about the proportion of ring-tailed lemurs that are left hand dominant, which is a categorical variable. The sample size is greater than 30, so the central limit theorem can be applied and the distribution of the sample proportion can be assumed to be approximately normal. Therefore, a one sample proportion z test can be used to test whether the proportion of left hand dominant ring-tailed lemurs is greater than 0.5.

The one sample proportion z test is a statistical test used to determine whether a sample proportion is significantly different from a hypothesized population proportion. This test requires a categorical variable and a sample size greater than 30 in order to apply the central limit theorem and assume normality of the distribution of the sample proportion. The test statistic is calculated by subtracting the hypothesized population proportion from the sample proportion and dividing by the standard error of the sample proportion.

To directly address the research question of whether more than half of all ring-tailed lemurs are left hand dominant, a one sample proportion z test should be conducted. This test is appropriate for a categorical variable with a sample size greater than 30 and assumes normality of the distribution of the sample proportion. The test will determine whether the proportion of left hand dominant ring-tailed lemurs is significantly different from 0.5, which is the null hypothesis.

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A study of the amount of time it takes a specialist to repair a mobile MRI shows that the mean is 8. 4 hours and the standard deviation is 1. 8 hours. If a broken mobile MRI is randomly​ selected, find the probability that its mean repair time is less than 8. 9 hours

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The probability that the mean repair time is less than 8.9 hours is 0.6103 (or 61.03%).

Given information: Mean repair time is 8.4 hours and Standard deviation is 1.8 hours

To find: Probability that the mean repair time is less than 8.9 hoursZ score can be calculated using the formula;

Z = (X - μ) / σWhere,

Z = z score

X = Value for which we need to find the probability (8.9 hours)

μ = Mean (8.4 hours)

σ = Standard deviation (1.8 hours)

Substituting the values in the above formula;

Z = (8.9 - 8.4) / 1.8Z = 0.28

Probability for z-score of 0.28 can be found from z table.

The value from the table is 0.6103

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An order of complexity that is worse than polynomial is called quadratic.A. TrueB. False

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An order of complexity that is worse than polynomial is called quadratic is B. False.
An order of complexity that is worse than polynomial is not called quadratic.

A polynomial function is a function that can be expressed as the sum of finite terms, where each term is a constant multiplied by a variable raised to a non-negative integer power.

A quadratic function is a type of polynomial function of degree 2, meaning the highest power of the variable is 2. The order of complexity of an algorithm is a measure of the amount of time or space required by the algorithm to solve a problem, expressed in terms of the input size of the problem.

An algorithm with a polynomial time complexity has an execution time that grows at most as a polynomial function of the input size.

An algorithm with an exponential time complexity has an execution time that grows exponentially with the input size, and an algorithm with a factorial time complexity has an execution time that grows as a factorial of the input size.

Therefore, an order of complexity that is worse than polynomial is usually referred to as exponential or factorial complexity, not quadratic. Understanding the order of complexity of an algorithm helps us understand how well an algorithm will scale as the input size grows.

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3. In questions 1 and 2 we looked at the limit of a function as the input approached a pre-chosen value. Now let's look at limits being used to calculate an instantaneous rate of change. We want to find out the rate at which P(x)=-2x² + 3x +5 is changing when x = 2. Recall the Difference Quotient. Do-f(x+h)-f(x) is the slope of the line that goes through the points (x, f(x)) and (x +h, f(x+h)). This can be thought of as the _rate of change of f(x) over the interval

Answers

The Difference Quotient can be thought of as the average rate of change of the function f(x) over the interval [x, x+h]. To find the instantaneous rate of change of f(x) at a specific point, we need to take the limit of the Difference Quotient as h approaches zero. This limit will give us the slope of the tangent line to the graph of f(x) at the point x, which is the instantaneous rate of change of the function at that point.

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The inverse of f(x)=1+log2(x) can be represented by the table displayed.

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The inverse of the function f(x) = 1 + log2(x) can be represented by the given table. The table shows the values of x and the corresponding values of the inverse function f^(-1)(x).

To find the inverse of a function, we switch the roles of x and y and solve for y. In this case, the function f(x) = 1 + log2(x) is given, and we want to find its inverse.

The table represents the values of x and the corresponding values of the inverse function f^(-1)(x). Each value of x in the table is plugged into the function f(x), and the resulting value is recorded as the corresponding value of f^(-1)(x).

For example, if the table shows x = 2, we can calculate f(2) = 1 + log2(2) = 2, which means that f^(-1)(2) = 2. Similarly, for x = 4, f(4) = 1 + log2(4) = 3, so f^(-1)(3) = 4.

By constructing the table with different values of x, we can determine the corresponding values of the inverse function f^(-1)(x) and represent the inverse function in tabular form.

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larcalc11 9.8.046. my notes write an equivalent series with the index of summation beginning at n = 1. [infinity] (−1)n 1(n 1)xn n = 0

Answers

To write an equivalent series with the index of summation beginning at n = 1, you'll need to shift the index of the original series. The original series is:

Σ (−1)^n * 1/(n+1) * x^n, with n starting from 0.

To shift the index to start from n = 1, let m = n - 1. Then, n = m + 1. Substitute this into the series:

Σ (−1)^(m+1) * 1/((m+1)+1) * x^(m+1), with m starting from 0.

Now, replace m with n:

Σ (−1)^(n+1) * 1/(n+2) * x^(n+1), with n starting from 0.

This is the equivalent series with the index of summation beginning at n = 1.

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A bag of pennies weighs 711.55 grams. Each penny weighs 3.5 grams. About how many pennies are in the bag? *

Answers

Therefore, there are about 203 pennies in the bag. This is a 90-word long answer. If you need to provide a 250-word answer, you can expand the explanation by discussing the weight and denomination of pennies, their history, and their use.

To find out the number of pennies in a bag that weighs 711.55 grams, we need to divide the total weight by the weight of each penny. We know that each penny weighs 3.5 grams,

therefore: Number of pennies = Total weight of bag / Weight of one penny= 711.55 / 3.5 = 203.015 ≈ 203 (rounded to the nearest whole number)

Therefore, there are about 203 pennies in the bag. To summarize the answer in a long answer format, we can write: We can find the number of pennies in the bag by dividing the total weight of the bag by the weight of each penny. Given that each penny weighs 3.5 grams, we can find out the number of pennies by dividing 711.55 grams by 3.5 grams.

Therefore, Number of pennies = Total weight of bag / Weight of one penny= 711.55 / 3.5 = 203.015 ≈ 203 (rounded to the nearest whole number)

Therefore, there are about 203 pennies in the bag. This is a 90-word long answer. If you need to provide a 250-word answer, you can expand the explanation by discussing the weight and denomination of pennies, their history, and their use.

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.I have a linear algebra quetion related to eignevalues and eigenvectors
If v1=[ -5 -4]
and v2= [ -4 -3]
are eigenvectors of a matrix A corresponding to the eigenvalues λ1=3 and λ2=−1, respectively,
then
1. A(v1+v2)= ( The answer is a vector0
2. A(−2v1)= (The is a vector)

Answers

1. the answer is the vector [-11 -9] and 2. The answer is the vector [-30 -24].

First, let's recall the definition of eigenvectors and eigenvalues. An eigenvector of a matrix A is a non-zero vector v such that when A is multiplied by v, the result is a scalar multiple of v. That scalar multiple is called the eigenvalue corresponding to that eigenvector. In other words, if v is an eigenvector of A with eigenvalue λ, then Av = λv.
Now, let's use this definition to answer your questions.
1. A(v1+v2) = Av1 + Av2 = λ1v1 + λ2v2. Substituting in the given values of λ1, λ2, v1, and v2, we get:
A(v1+v2) = 3[-5 -4] + (-1)[-4 -3]
= [-15 -12] + [4 3]
= [-11 -9]
So the answer is the vector [-11 -9].
2. A(-2v1) = -2Av1 = -2λ1v1. Substituting in the given value of λ1 and v1, we get:
A(-2v1) = -2(3)[-5 -4]
= [-30 -24]
So the answer is the vector [-30 -24].

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1.the answer is the vector [-11  -9] and  2.The answer is the vector [-30  -24].



Since [tex]v_{1}[/tex] and [tex]v_{2}[/tex] are eigenvectors of matrix A, we know that:
A [tex]v_{1}[/tex] = λ1 [tex]v_{1}[/tex]
A [tex]v_{2}[/tex] = λ2 [tex]v_{2}[/tex]
Let's use this information to solve the given problems:
1. A( [tex]v_{1}[/tex] + [tex]v_{2}[/tex] ) = A [tex]v_{1}[/tex]  + A [tex]v_{2}[/tex] = λ1 [tex]v_{1}[/tex] + λ2 [tex]v_{2}[/tex]
Substituting the values of λ1, [tex]v_{1}[/tex] , λ2, [tex]v_{2}[/tex] and  that were given:

A( [tex]v_{1}[/tex] + [tex]v_{2}[/tex] ) = 3[-5  -4] + (-1)[-4  -3]
= [-15  -12] + [4 3] = [-11  -9]
So the answer is the vector [-11  -9].
2. A(-2[tex]v_{1}[/tex] ) = -2 A [tex]v_{1}[/tex]
Using the given equation for A [tex]v_{1}[/tex] , we get:
A(-2[tex]v_{1}[/tex] ) = -2 λ1 [tex]v_{1}[/tex]
Substituting the values of λ1 and [tex]v_{1}[/tex]  that were given:

A(-2[tex]v_{1}[/tex]) = -2(3)[-5  -4] = [30  24]
So the answer is the vector [30  24].

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Will give brainlest and 25 points

Answers

Answer:

The angles are complementary. It is a 90° angle or a right angle.

x = 50°

Hope this helps!

Step-by-step explanation:

50° + 40° = 90°

let x(t) = 11 cos(7πt − π/3). in each of the following parts, the discrete-time signal x[n] is obtained by sampling x(t) at a rate fs samples/s, and the resultant x[n] can be written ax[n] = A cos(ω1n + φ) For each part below, determine the values of A, φ, and ω1 such that 0 ≤ ω1 ≤ π. In addition, state whether or not the signal has been over-sampled or under-sampled. Sampling frequency is fs = 9 samples/s. Sampling frequency is fs, = 6 samples/s. Sampling frequency is fs = 3 samples/s.

Answers

1. the values of A, φ, and ω1 are A = 11, φ = -π/3, and ω1 = 7π/81.

2. The values of A, φ, and ω1 are A = 11, φ = -π/3, and ω1 = 2π/3.

Part 1: Sampling frequency is fs = 9 samples/s.

The sampling period is T = 1/fs = 1/9 seconds.

The discrete-time signal x[n] is obtained by sampling x(t) at a rate of 9 samples/s, so we have:

x[n] = x(nT) = 11 cos(7πnT - π/3)

= 11 cos(7πn/9 - π/3)

The angular frequency is ω = 7π/9, which satisfies 0 ≤ ω ≤ π.

The amplitude A can be found by taking the absolute value of the maximum value of the cosine function, which is 11. So A = 11.

The phase φ can be found by setting n = 0 and solving for φ in the equation x[0] = A cos(φ). We have:

x[0] = 11 cos(π/3) = 11/2

A cos(φ) = 11/2

φ = ±π/3

We choose the negative sign to satisfy the condition 0 ≤ ω1 ≤ π. So φ = -π/3.

The angular frequency ω1 is given by ω1 = ωT = 7π/9 * (1/9) = 7π/81.

Since the angular frequency satisfies 0 ≤ ω1 ≤ π, the signal is not over-sampled or under-sampled.

Therefore, the values of A, φ, and ω1 are A = 11, φ = -π/3, and ω1 = 7π/81.

Part 2: Sampling frequency is fs, = 6 samples/s.

The sampling period is T = 1/fs, = 1/6 seconds.

The discrete-time signal x[n] is obtained by sampling x(t) at a rate of 6 samples/s, so we have:

x[n] = x(nT) = 11 cos(7πnT - π/3)

= 11 cos(7πn/6 - π/3)

The angular frequency is ω = 7π/6, which does not satisfy 0 ≤ ω ≤ π. Therefore, the signal is over-sampled.

To find the values of A, φ, and ω1, we need to first down-sample the signal by keeping every other sample. This gives us:

x[0] = 11 cos(-π/3) = 11/2

x[1] = 11 cos(19π/6 - π/3) = -11/2

x[2] = 11 cos(25π/6 - π/3) = -11/2

We can see that x[n] is a periodic signal with period N = 3.

The amplitude A can be found by taking the absolute value of the maximum value of the cosine function, which is 11. So A = 11.

The phase φ can be found by setting n = 0 and solving for φ in the equation x[0] = A cos(φ). We have:

x[0] = 11/2

A cos(φ) = 11/2

φ = ±π/3

We choose the negative sign to satisfy the condition 0 ≤ ω1 ≤ π. So φ = -π/3.

The angular frequency ω1 is given by ω1 = 2π/N = 2π/3.

Therefore, the values of A, φ, and ω1 are A = 11, φ = -π/3, and ω1 = 2π/3.

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from sin(3) = 1 2 , solve for 3 on the interval [0, 2). (enter your answers as a comma-separated list.)

Answers

The solution for 3 on the interval [0, 2) is 3 = π/6, 13π/6 or 30°, 390°.

To solve for 3 from sin(3) = 1/2 on the interval [0, 2), we need to use the inverse sine function (arcsin) and solve for the angle whose sine is equal to 1/2.
arcsin(1/2) = 30° or π/6 radians
Since the interval is [0, 2), we need to add 2π to the angle if it is less than 0 or greater than or equal to 2π.
So, the solution for 3 on the given interval is:
3 = π/6 or 30°, or
3 = π/6 + 2π = 13π/6 or 390°
Therefore, the solution for 3 on the interval [0, 2) is 3 = π/6, 13π/6 or 30°, 390°.

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Mary is making 5 necklaces for her friends, and she needs 11/12 of a foot of string for each necklace. How many feet of string does she need?


A. 5 11/12 feet

B. 4 7/12 feet

C. 7 4/12 feet

D. 3 7/12 feet

Answers

Mary needs 4 7/12 feet of string for the 5 necklaces. The answer is option B.

How to solve for the string needed

To find how many feet of string Mary needs for 5 necklaces, we can multiply the length of string needed for each necklace by the number of necklaces.

Length of string needed for each necklace = 11/12 feet

Number of necklaces = 5

Total length of string needed = (Length of string needed for each necklace) * (Number of necklaces)

Total length of string needed = (11/12) * 5

Total length of string needed = 55/12 feet

To simplify the fraction, we can convert it to a mixed number:

Total length of string needed = 4 7/12 feet

Therefore, Mary needs 4 7/12 feet of string for the 5 necklaces. The answer is option B.

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Explicit formulas for compositions of functions. The domain and target set of functions f, g, and h are Z. The functions are defined as: . . f(x) = 2x + 3 g(x) = 5x + 7 h(x) = x2 + 1 = . Give an explicit formula for each function given below. (a) fog (b) gof (C) foh (d) hof

Answers

Explicit formulas are mathematical expressions that represent a function or relationship between variables in a direct and clear way, without the need for further calculations or interpretation.

To find the explicit formulas for the compositions of the given functions, we need to substitute the function inside the other function and simplify:

(a) fog(x) = f(g(x)) = f(5x + 7) = 2(5x + 7) + 3 = 10x + 17

So the explicit formula for fog(x) is 10x + 17.

(b) gof(x) = g(f(x)) = g(2x + 3) = 5(2x + 3) + 7 = 10x + 22

So the explicit formula for gof(x) is 10x + 22.

(c) foh(x) = f(h(x)) = f(x^2 + 1) = 2(x^2 + 1) + 3 = 2x^2 + 5

So the explicit formula for foh(x) is 2x^2 + 5.

(d) hof(x) = h(f(x)) = h(2x + 3) = (2x + 3)^2 + 1 = 4x^2 + 12x + 10

So the explicit formula for hof(x) is 4x^2 + 12x + 10.

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Find the area of a regular hexagon inscribed in a circle of radius 12 inches

Answers

To find the area of a regular hexagon inscribed in a circle, we can use the formula:

Area of Hexagon = (3√3/2) * s^2

Where s is the length of each side of the hexagon.

In this case, the hexagon is inscribed in a circle of radius 12 inches. The length of each side of the hexagon is equal to the radius of the circle.

Therefore, the length of each side (s) is 12 inches.

Plugging the value of s into the formula, we get:

Area of Hexagon = (3√3/2) * (12^2)

Area of Hexagon = (3√3/2) * 144

Area of Hexagon = (3√3/2) * 144

Area of Hexagon ≈ 374.52 square inches

The area of the regular hexagon inscribed in the circle with a radius of 12 inches is approximately 374.52 square inches.

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My Notes Ask Your Teacher (a) Find parametric equations for the line through (1, 3, 4) that is perpendicular to the plane x-y + 2z 4, (Use the parameter t.) )13-12-4 (b) In what points does this line intersect the coordinate planes? xy-plane (x, y, z)-((-1,5,0)|x ) yz-plane (x, y, z)- xz-plane x, 9+ Need Help? Read it Talk to a Tutor Submit Answer Save Progress Practice Another Version

Answers

Parametric equations for the line through (1, 3, 4) that is perpendicular to the plane x-y+2z=4 are:

x = 1 + 2t

y = 3 - t

z = t

We know that the direction vector of the line should be perpendicular to the normal vector of the plane. The normal vector of the plane x-y+2z=4 is <1, -1, 2>. Thus, the direction vector of our line should be parallel to the vector <1, -1, 2>.

Let the line pass through the point (1, 3, 4) and have the direction vector <1, -1, 2>. We can write the parametric equations of the line as:

x = 1 + at

y = 3 - bt

z = 4 + c*t

where (a, b, c) is the direction vector of the line. Since the line is perpendicular to the plane, we can set up the following equation:

1a - 1b + 2*c = 0

which gives us a = 2, b = -1, and c = 1.

Substituting these values in the parametric equations, we get:

x = 1 + 2t

y = 3 - t

z = t

To find the intersection of the line with the xy-plane, we set z=0 in the parametric equations, which gives us x=1+2t and y=3-t. Solving for t, we get (1/2, 5/2, 0). Therefore, the line intersects the xy-plane at the point (1/2, 5/2, 0).

Similarly, we can find the intersection points with the yz-plane and xz-plane by setting x=0 and y=0 in the parametric equations, respectively. We get the intersection points as (-1, 5, 0) and (9, 0, 3), respectively.

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virginia company paid $7,500 cash for various manufacturing overhead costs. as a result of this transaction:

Answers

The Virginia Company paid $7,500 in cash for manufacturing overhead costs, which refers to indirect expenses incurred in the production process.

Examples of manufacturing overhead costs include rent, utilities, insurance, and maintenance expenses.

By paying for these expenses, the Virginia Company was able to keep their manufacturing operations running smoothly and efficiently.

This transaction would likely be recorded in the company's financial records as a debit to manufacturing overhead and a credit to cash.

Ultimately, the payment of manufacturing overhead costs helps to ensure that the company can produce goods at a reasonable cost while maintaining high quality standards, which is essential for long-term success in the competitive marketplace.

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The measures of two complementary angles are describe by the expressions (11y-5)0 and (16y=14)0. find the measures of the angles

Answers

Therefore, the measures of the two complementary angles are 28° and 62°.

Given expressions for complementary angles are (11y - 5)° and (16y + 14)°.

We know that the sum of complementary angles is 90°.

Therefore, we can set up an equation and solve it as follows:

(11y - 5)° + (16y + 14)° = 90°11y + 16y + 9 = 90 (taking the constant terms on one side)

27y = 81y = 3

Hence, the measures of the two complementary angles are:

11y - 5 = 11(3) - 5

= 28°(16y + 14)

= 16(3) + 14

= 62°

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Calculate the Taylor polynomials T2 and T3 centered at a = 0 for the function f(x) = 13 tan(x). (Use symbolic notation and fractions where needed.) T2(x) = T3(x) =

Answers

The Taylor polynomial T2 centered at a = 0 for f(x) = 13 tan(x) is T2(x) = 13x, and the Taylor polynomial T3 centered at a = 0 is T3(x) = 13x + (26/3)x³.

To calculate the Taylor polynomials T2 and T3 centered at a = 0 for the function f(x) = 13 tan(x), we need to find the first few derivatives of f(x) and then evaluate them at a = 0.

1. Find the first few derivatives:
f'(x) = 13 sec²(x)
f''(x) = 26 sec²(x)tan(x)
f'''(x) = 26 sec²(x)(tan^2(x) + 2)

2. Evaluate derivatives at a = 0:
f(0) = 13 tan(0) = 0
f'(0) = 13 sec²(0) = 13
f''(0) = 26 sec²(0)tan(0) = 0
f'''(0) = 26 sec²(0)(tan²(0) + 2) = 52

3. Form the Taylor polynomials:
T2(x) = f(0) + f'(0)x + (1/2)f''(0)x² = 0 + 13x + 0 = 13x
T3(x) = T2(x) + (1/6)f'''(0)x³ = 13x + (1/6)(52)x³ = 13x + (26/3)x³

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he average width x is 31.19 cm. the deviations are: what is the average deviation?31.5 0.086 cm 0.25 O1

Answers

The average deviation from the mean width of 31.19 cm is 0.1725 cm. This means that, on average, the data points are about 0.1725 cm away from the mean width.

The average deviation of a data set is a measure of how spread out the data is from its mean.

It is calculated by finding the absolute value of the difference between each data point and the mean, then taking the average of these differences.

In this problem, we are given a set of deviations from the mean width of 31.19 cm.

The deviations are:

31.5, 0.086 cm, 0.25, -0.01

The average deviation, we need to calculate the absolute value of each deviation, then their average.

We can use the formula:

average deviation = (|d1| + |d2| + ... + |dn|) / n

d1, d2, ..., dn are the deviations and n is the number of deviations.

Using this formula and the given deviations, we get:

average deviation = (|31.5 - 31.19| + |0.086| + |0.25| + |-0.01|) / 4

= (0.31 + 0.086 + 0.25 + 0.01) / 4

= 0.1725 cm

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The average deviation from the mean width of 31.19 cm is 20.42 cm. This tells us that the data points are spread out from the mean by an average of 20.42 cm, which is a relatively large deviation for a dataset with a mean of 31.19 cm.

In statistics, deviation refers to the amount by which a data point differs from the mean of a dataset. The average deviation is a measure of the average distance between each data point and the mean of the dataset. To calculate the average deviation, we first need to calculate the deviation of each data point from the mean.

In this case, we have the mean width x as 31.19 cm and the deviations of the data points as 0.5 cm and -0.086 cm. To calculate the deviation, we subtract the mean from each data point:

Deviation of 31.5 cm = 31.5 - 31.19 = 0.31 cm

Deviation of 0.5 cm = 0.5 - 31.19 = -30.69 cm

Deviation of -0.086 cm = -0.086 - 31.19 = -31.276 cm

Next, we take the absolute value of each deviation to eliminate the negative signs, as we are interested in the distance from the mean, not the direction. The absolute deviations are:

Absolute deviation of 31.5 cm = 0.31 cm

Absolute deviation of 0.5 cm = 30.69 cm

Absolute deviation of -0.086 cm = 31.276 cm

The average deviation is calculated by summing the absolute deviations and dividing by the number of data points:

Average deviation = (0.31 + 30.69 + 31.276) / 3 = 20.42 cm

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Use the Fundamental Counting Principle to find the total number


possible outcomes.


Fitness Tracker


Battery 1 day, 3 days, 5 days, 7 days


Color


Silver, Green, Blue,


Pink, Black


There are


total possible outcomes.

Answers

Total number of possible outcomes are 20

The Fundamental Counting Principle is a rule that states that if one event has M outcomes and another event has N outcomes, then the combined events have M*N outcomes. The principle is helpful in determining the number of possible outcomes in an experiment that involves several sub-experiments. Let us see how we can use the Fundamental Counting Principle to determine the total number of possible outcomes in the given scenario:

There are four different battery lives: 1 day, 3 days, 5 days, and 7 days.There are five different colors: silver, green, blue, pink, and black.Using the Fundamental Counting Principle, we can determine the total number of possible outcomes as follows:Total number of possible outcomes = Number of outcomes for battery life * Number of outcomes for color= 4 * 5= 20

To use the Fundamental Counting Principle to determine the total number of possible outcomes, we need to determine the number of outcomes for each sub-experiment. In this case, there are two sub-experiments: battery life and color. For the battery life sub-experiment, there are four different battery lives: 1 day, 3 days, 5 days, and 7 days.

For the color sub-experiment, there are five different colors: silver, green, blue, pink, and black.Using the Fundamental Counting Principle, we can determine the total number of possible outcomes by multiplying the number of outcomes for each sub-experiment. Therefore, the total number of possible outcomes is the product of the number of outcomes for battery life and the number of outcomes for color, which is 4 * 5 = 20.There are 20 total possible outcomes for the Fitness Tracker experiment. The Fundamental Counting Principle is a useful tool in determining the number of possible outcomes in complex experiments that involve several sub-experiments. The principle is helpful in making predictions and calculating probabilities.

the Fundamental Counting Principle can be used to find the total number of possible outcomes in an experiment. By multiplying the number of outcomes for each sub-experiment, we can determine the total number of possible outcomes.

In this scenario, there are four possible outcomes for battery life and five possible outcomes for color, resulting in a total of 20 possible outcomes. The principle is helpful in making predictions and calculating probabilities in complex experiments.

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In 1867, the United States purchased Alaska from Russia. Alaska is about 5. 9 × 105 square miles. The United States paid about $12. 20 per square mile. Approximately how much did the United States pay Russia for Alaska? Complete the steps to answer the question. 1. Write the expression: (5. 9 × 105)(12. 2) 2. Multiply the decimal values: × 105 3. Write in scientific notation: × The United States paid Russia approximately for Alaska.

Answers

The correct answer to the question ,The United States paid Russia approximately $7,198,000 for Alaska.

In 1867, the United States purchased Alaska from Russia.

Alaska is about 5.9 × 105 square miles. The United States paid about $12.20 per square mile.

Approximately how much did the United States pay Russia for Alaska?

The United States paid Russia approximately $7,198,000 for Alaska.

Steps to answer the question:

1. The expression is: (5.9 × 105)(12.2) or (5.9 × 105) X (12.2)

2. Multiply the decimal values:≈ 71,980,0003.

Write in scientific notation:≈ 7.198 × 107

The United States paid Russia approximately $7,198,000 for Alaska.

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Juan and Rajani are both driving along the same highway in two different cars to a stadium in a distant city. At noon, Juan is 260 miles away from the stadium and Rajani is 380 miles away from the stadium. Juan is driving along the highway at a speed of 30 miles per hour and Rajani is driving at speed of 50 miles per hour. Let � J represent Juan's distance, in miles, away from the stadium � t hours after noon. Let � R represent Rajani's distance, in miles, away from the stadium � t hours after noon. Graph each function and determine the interval of hours, � , t, for which Juan is closer to the stadium than Rajani.

Answers

The interval of hours for which Juan is closer to the stadium than Rajani is t < 6, which means within the first 6 hours after noon.

To graph the functions representing Juan's and Rajani's distances from the stadium, we can use the equations:

J(t) = 260 - 30t (Juan's distance from the stadium)

R(t) = 380 - 50t (Rajani's distance from the stadium)

The functions represent the distance remaining (in miles) as a function of time (in hours) afternoon.

To determine the interval of hours for which Juan is closer to the stadium than Rajani, we need to find the values of t where J(t) < R(t).

Let's solve the inequality:

260 - 30t < 380 - 50t

-30t + 50t < 380 - 260

20t < 120

t < 6

Thus, the inequality shows that for t < 6, Juan is closer to the stadium than Rajani.

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Graph the points on the coordinate plane.

M(−212, −3), N(−1.5, 3.5), P(−312, 34), Q(0.5, −3.5), R(234, −112)
Use the Point Tool to plot the points.

Keyboard Instructions
Initial graph state
The horizontal axis goes from -4.5 to 4.5 with ticks spaced every 1 unit(s).
The vertical axis goes from -4.5 to 4.5 with ticks spaced every 1 unit(s).
Skip to navigation

Answers

The graph along the coordinate plane is attached below

What is graph of the points on the coordinate plane?

To find the graph of the points along the coordinate plane, we simply need to use a graphing calculator to plot the points M - N, N - P, P - Q, Q - R and R - M.

These individual points in this coordinates cannot form a quadrilateral on the plane.

The total perimeter or distance of the plane cannot be calculated by simply adding up all the points along the line.

However, these lines seem not to intersect at any point as they travel across the plane in different directions.

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Find the values of x, y and z that correspond to the critical point of the function f(x,y) 4x2 + 7x + 6y + 2y?: Enter your answer as a number (like 5, -3, 2.2) or as a calculation (like 5/3, 2^3, 5+4). c= za

Answers

The values of x, y and z that correspond to the critical point of the function f(x,y) 4x2 + 7x + 6y + 2y are  (-7/8, -3/2).

To find the values of x, y, and z that correspond to the critical point of the function f(x, y) = 4x^2 + 7x + 6y + 2y^2, we need to find the partial derivatives with respect to x and y, and then solve for when these partial derivatives are equal to 0.

Step 1: Find the partial derivatives
∂f/∂x = 8x + 7
∂f/∂y = 6 + 4y

Step 2: Set the partial derivatives equal to 0 and solve for x and y
8x + 7 = 0 => x = -7/8
6 + 4y = 0 => y = -3/2

Now, we need to find the value of z using the given equation c = za. Since we do not have any information about c, we cannot determine the value of z. However, we now know the critical point coordinates for the function are (-7/8, -3/2).

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Tamera graphs the following points on a coordinate plane. P(3,-4) Q(-7,2) R(5,3) S(6,-1)

Answers

The graph would show the points P, Q, R, and S at their respective locations based on their coordinates (x, y).

Tamera graphs the following points on a coordinate plane:

P(3, -4)

Q(-7, 2)

R(5, 3)

S(6, -1)

These points represent the coordinates of four distinct locations on the plane. Each point is represented by an ordered pair (x, y), where the first value represents the x-coordinate and the second value represents the y-coordinate.

For example, the point P(3, -4) means that the x-coordinate is 3 and the y-coordinate is -4. Similarly, the point Q(-7, 2) has an x-coordinate of -7 and a y-coordinate of 2.

By plotting these points on a coordinate plane, Tamera would mark the location of each point using the respective x and y values. This helps visualize the positions of the points relative to each other and the axes of the plane.

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Which statement is correct regarding the effect of air pollution in India and China?A. It is a regional problem that only effects the industial parts of each country. B. Only the southeastern portion of China and west India is affected by air pollution. C. Both countries have temporarily stopped producing goods that pollute the air. D. It has resulted in major health concerns for the people living there Which 4 of these details do you need to enter when adding a client with a subscription via QuickBooks Online Accountant?- The QuickBooks Online subscription level- Which team members should have access to the account- Whether they follow accrual- or cash-based accounting- Their email address- How many costumers they have- Who should be billed for the subscription let f(x) = x2 1 x2 1 . (a) find f '(x) and f ''(x). f '(x) = f ''(x) = Determine and prove whether an argument in English is valid or invalid. Prove whether each argument is valid or invalid. First find the form of the argument by defining predicates and expressing the hypotheses and the conclusion using the predicates. If the argument is valid, then use the rules of inference to prove that the form is valid. If the argument is invalid, give values for the predicates you defined for a small domain that demonstrate the argument is invalid. QUESTION A AND B ALREADY SOLVED. PLEASE solve part C, D, E using same method, and give some explantion for your answer. THANKS! The domain for each problem is the set of students in a class. (a) Every student on the honor roll received an A. No student who got a detention received an A. No student who got a detention is on the honor roll. H(x): x is on the honor roll A(x): x received an A. D(x): x got a detention. using the error formula (5.23), bound the error in tn(f) applied to the following integrals pi/2 integral 0 cos(x) dx an inductor used in a dc power supply has an inductance of 13.0 hh and a resistance of 160.0 . it carries a current of 0.350 aa.Part AWhat is the energy stored in the magneticfield?Part BAt what rate is thermal energy developed inthe inductor?Part CDoes your answer to part (b) mean that themagnetic-field energy is decreasing with time? Yes or No.Explain. In order to measure the height of a tree (without having to climb it) Andy measuresthe length of the tree's shadow, the length of his shadow, and uses his own height. IfAndy's height is 5. 6 ft, his shadow is 4. 2 ft long and the tree's shadow is 42. 3 ft long,how tall is the tree? Create a proportion and show your work. 32 g sample of gas occupies 22.4 l at stp. what is the identity of the gas ? Can someone explain please The Earth moves at a uniform speed around the Sun in an approximately circular orbit of radius r = 1.501011 m. please solve for all values of real numbers x and y that satisfy the following equation: 1 (x iy) The number 1.3 is both a(n) __________ and a(n) __________ number. find the producers' surplus if the supply function for pork bellies is given by the following. s(q)=q5/2 3q3/2 50 assume supply and demand are in equilibrium at q=9. When parents set few controls on their children's television viewing, allowing the children freedom to set individual limits, make few demands, and do not punish for improper television viewing, the parents exemplify a parenting style referred to as a pessimistic b authoritative c permissive d rejecting-neglecting e authoritarian Why did our prisoners try to work within the arbitrary prison system to effect a change in it Assume that a 25 W light bulb gives off 2.50% of its energy as visible light.How many photons of visible light are given off in 1.00min? (Use an average visible wavelength of 550nm.) direct imaging of exoplanets is currently most sensitive to: (a) rocky planets on close orbits. (b) rocky planets on wide orbits. (c) giant planets on close orbits. (d) giant planets on wide orbits. A formal report may be defined as a document in which a writer to solve a problem. decision-making Formal reports are used to assist in the offers recommendations if requested draws conclusions What is the first step in formal report writing? In which stage of the new product development process is a SWOT analysis used to identify the strategic role the new product might serve in the firm's business portfolio O screening and evaluation Idea generation O development O new product strategy development business analysis What are the risks of individualism in a community that is fiercely individualistic but also similar in terms of racial uniform and a social static community. PLEASE ANSWER