suppose that a certain college class contains students. of these, are seniors, are english majors, and are neither. a student is selected at random from the class. (a) what is the probability that the student is both a senior and an english major? (b) given that the student selected is a senior, what is the probability that he is also an english major? write your responses as fractions.

The graph of the function has a vertical asymptote at x = -2 and a horizontal asymptote at y = -1. The graph is a hyperbola that opens downwards and has its center at (-2, -1).

Writing the function in the form y= a/x-h+k, rearrange as follows:

y = a / (x - h) + k

The graph is a hyperbola with a vertical asymptote at x = h and a horizontal asymptote at y = k.

The value of "a" determines the shape of the hyperbola. If a is +, the hyperbola opens upwards, and if a is -, it opens downwards.

The point (h, k) is the center of the hyperbola.

Transforming the graph of y = 1/x into the given function, apply the following transformations:

Horizontal shift: shift the graph to the right by 2 units, so h = -2.

Vertical shift: shift the graph downwards by 6 units, so k = -6.

Vertical stretch: stretch the graph vertically by a factor of -1, so a = -1.

Therefore, the function y = -1/(x+2) - 6 is the transformed function.

To solve y = (-x-2)/(x+6), simplify:

y = (-x-2)/(x+6)

y = (-1(x+2))/(x+6)

y = (-1(x+2))/((x+2)+4)

y = -1/(x+2) - 4/(x+2)

y = -1/(x+2) - 4x/(x+2)(x+2)

This expression is in the form y = a/(x-h) + k, where:

- a = -4

- h = -2

- k = -1

Therefore, the graph of the function has a vertical asymptote at x = -2 and a horizontal asymptote at y = -1. The graph is a hyperbola that opens downwards and has its center at (-2, -1).

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The ladder demanded for Hill 2 must be no less than 108.27 meters high.

In order to find the necessary height of the ladder for Hill 1, we can employ an equation-based method:

height = tan(60 degrees) * 50 meters

height = 28.87 meters

From this calculation, it follows that a ladder is required that is at least 28.87 meters tall in order to climb Hill 1.

For Hill 2, using the same technique, we ascertain the required minimum ladder height:

tan(75 degrees) =height / 40 meters

height = tan(75 degrees) * 40 meters

height = 108.27 meters

Consequently, the ladder demanded for Hill 2 must be no less than 108.27 meters high.

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Yes, these data support the scientist's belief that large islands are more effective at protecting at-risk species than small islands. To provide statistical justification, we can compare the probability of extinction for each island size: For large islands, the probability of extinction is 19/208, or approximately 0.091. For small islands, the probability of extinction is 66/299, or approximately 0.221.

The data provided can support the scientist's belief that large islands are more effective than small islands for protecting at-risk species. We can use the concept of probability to calculate the likelihood of extinction for both large and small islands.

For the large island, the probability of extinction for any given species is 19/208 or approximately 0.091. For the small island, the probability of extinction for any given species is 66/299 or approximately 0.221.

Comparing these probabilities, we see that the probability of extinction is higher for at-risk species on small islands than on large islands. This supports the scientist's belief that large islands are more effective for protecting at-risk species.

Additionally, we can use statistical tests such as a chi-square test or a two-sample t-test to confirm whether the difference in extinction rates between large and small islands is statistically significant.

These tests would require more information such as sample size and variance, but based on the provided data alone, the probability calculations suggest that the scientist's belief is supported.

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4.) The scale factor of the given circle used for dilation = 1.5

5.) The scale factor of the cone used for dilation = 2.

To calculate the scale factor of a given figure for its dilation or reduction, the formula that should be used is given below;

scale factor = Bigger dimensions/smaller dimensions

For question 4.)

Radius of bigger circle = 3

Radius of small circle = 2

The scale factor = 3/2 = 1.5

For question 5.)

Diameter of bigger cone = 4

Diameter of smaller cone = 2

Scale factor = 4/2 = 2

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The expression 10 times the quantity 2/3 times 42 when evaluated has a solution of 280

In this question, the expression is given as

10 times the quantity 2/3 times 42

Express using numbers and mathematical operators

So, we have

10 * 2/3 * 42

Evaluating the products of 10 and 2

So, we have

10 * 2/3 * 42 = 20/3 * 42

Divide 42 by 3

So, we have

10 * 2/3 * 42 = 20 * 14

Evaluating the products of 20 and 14

So, we have

10 * 2/3 * 42 = 280

Hence, the solution to the expression is 280

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The linear combination equals zero for all values of x. The cos(2x) terms cancel out, and we're left with: 1/2 = 1/2, as the equation is true for all x, we have shown that the given functions f(x), g(x), and h(x) are linearly dependent on the real line.

Let's start by setting up the linear combination:
a*f(x) + b*g(x) + c*h(x) = 0
where a, b, and c are constants to be determined, and f(x), g(x), and h(x) are the given functions.
Plugging in the functions, we get:
a*17 + b*cos^2(x) + c*cos(2x) = 0
Now we need to find values of a, b, and c that satisfy this equation for all x.
One way to do this is to choose a value of x that simplifies the equation. Let's choose x = 0, which gives:
a*17 + b*1 + c*1 = 0
Simplifying further, we get:
17a + b + c = 0
Now we need to find two more equations to solve for a, b, and c. One way to do this is to choose two more values of x that simplify the equation. Let's choose x = π/2 and x = π, which give:
a*17 + b*0 + c*(-1) = 0   (since cos(2π/2) = -1)
a*17 + b*1 + c*1 = 0       (since cos^2(π/2) = 1)
Simplifying each of these equations, we get:
17a - c = 0
17a + b + c = 0
Now we have three equations and three unknowns, which we can solve using elimination or substitution. One possible solution is:
a = 1/34
b = -9/34
c = 9/34
Substituting these values back into the linear combination, we get: (1/34)*17 - (9/34)*cos^2(x) + (9/34)*cos(2x) = 0
which holds for all values of x. Therefore, we have found a non-trivial linear combination of the given functions that vanishes identically, showing that the functions are linearly dependent on the real line.

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In ascending order, the two distinct eigenvalues are λ1 = 3 and λ2 = 2. The correct choice is (B):

According to the Diagonalization Theorem, a matrix A is diagonalizable if and only if it has n linearly independent eigenvectors, where n is the size of A. If A is diagonalizable, then it can be factored in the form PDP^(-1), where D is the diagonal matrix containing the eigenvalues of A and the columns of P are the corresponding eigenvectors.

To find the eigenvalues and eigenvectors of the given matrix A, we can first find the characteristic polynomial by computing det(A - λI), where I is the identity matrix and λ is an eigenvalue. Using this method, we can find that the characteristic polynomial of A is p(λ) = -(λ-3)^3(λ-2), which gives us three distinct eigenvalues: λ1 = λ2 = λ3 = 3 and λ4 = 2.

To find a basis for the corresponding eigenspace of λ1 = λ2 = λ3 = 3, we can solve the system (A - 3I)x = 0, where I is the 4x4 identity matrix. This gives us the eigenvector [1, 0, -1, 0]^T, which is the basis for the eigenspace.

To find a basis for the corresponding eigenspace of λ4 = 2, we can solve the system (A - 2I)x = 0. This gives us the eigenvectors [2, 1, 0, 0]^T and [1, 0, 1, -2]^T, which form a basis for the eigenspace.

Therefore, the correct choice is (B): In ascending order, the two distinct eigenvalues are λ1 = 3 and λ2 = 2.

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The area of an equilateral triangle with a 6-inch apothem is 187.06 square inches

To find the area (A) of an equilateral triangle with a 6-inch apothem, you can use the following formula:

A = (Perimeter × Apothem) / 2

First, find the side length (s) of the equilateral triangle using the Pythagorean theorem. Note that the apothem and the line to the vertex makes 30-60-90 triangles.

In a 30-60-90 triangle, the ratio of the side lengths is 1:√3:2, so:

Side length (s) / 2 = √3 * Apothem * 2 = √3 * 6 * 2 = 12√3 inches

Now calculate the perimeter of the equilateral triangle:

Perimeter = 3 * s = 3 * 12√3 = 36√3 inches

Finally, find the area using the formula:

A = (Perimeter × Apothem) / 2
A = (36√3 × 6) / 2
A = 187.06 square inches

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33.3miles/ hour was their average speed from hour 1 to hour 4. The overall distance the object covers in a given amount of time is its average speed.

The overall distance the object covers in a given amount of time is its average speed. A scalar value represents the average speed. It has no direction and is indicated by the magnitude. Please share the formula for calculating average speed as well as instances with solutions.

average speed=total distance/total time

distance =150-50=100miles

time =4-1 =3 hours

average speed=100/3

                       = 33.3miles/ hour

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The critical numbers of the function, we need to find the values of x where F'(x) = 0 or F'(x) does not exist. F'(x) = (8/5)(-3x). Setting F'(x) to 0, we have (8/5)(-3x) = 0. Solving for x, we get x = 0. Therefore, the critical number of the function is x = 0.

To find the derivative of the function F(x) = (4/5)(-3)^2, we first need to clarify the function itself. Assuming the function is F(x) = (4/5)(-3x)^2, we can proceed to find the first and second derivatives.

The first derivative, F'(x), can be found using the power rule: d/dx (a*x^n) = n*a*x^(n-1). In this case, a = 4/5 and n = 2. So, F'(x) = 2*(4/5)(-3x)^(2-1) = (8/5)(-3x).

To find the second derivative, F"(x), we again apply the power rule to F'(x): F"(x) = 1*(8/5)(-3)^(1-1) = (8/5)(-3)^0 = 8/5.

To find the values of x such that F"(x) = 0, we look at the second derivative, F"(x) = 8/5. Since this is a constant value, it cannot equal 0. Therefore, there are no values of x that satisfy F"(x) = 0 (DNE).

As for the values of x in the domain of F such that F"(x) does not exist, since F"(x) is a constant value, it exists for all x in the domain. Thus, there are no values of x where F"(x) does not exist (DNE).

Finally, we must determine the values of x where F'(x) = 0 or F'(x) does not exist in order to determine the critical numbers of the function. F'(x) = (8/5)(-3x). We obtain (8/5)(-3x) = 0 by setting F'(x) to 0. We obtain x = 0 by solving for x. Consequently, x = 0 is the critical value of the function.

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Answer:

[tex] \sqrt{ {2}^{2} + {4}^{2} } = \sqrt{4 + 16} = \sqrt{20} = 2 \sqrt{5} [/tex]

Answer:

[tex]\sqrt20[/tex]

Step-by-step explanation:

Use the Formula [tex]a^{2} + b^{2} = c^{2}[/tex]

[tex]2^{2} + 4^{2} = \sqrt{20}[/tex]

Answer for the k12 Quiz

Hope that helps!

The optimal location for a fire station can be determined through the application of the centroid and minimax models, careful analysis of transportation routes, and consideration of the city's growth and development patterns.

To determine the optimal location for a fire station that will serve several subdivisions of a city, we need to consider factors such as transportation routes, travel time, and the distribution of the subdivisions.

The goal is to minimize the maximum distance from the fire station to each subdivision, ensuring efficient and timely response to emergencies.

One method to find the optimal location is to use the centroid model, which calculates the geographic center of the service area based on population density and transportation routes. By placing the fire station at the centroid, we can minimize the average distance to all subdivisions, thus reducing overall response times.

Another approach is to apply the minimax model, which focuses on minimizing the maximum distance from the fire station to the farthest subdivision. This model ensures that all subdivisions receive equitable service and no area is disproportionately far from emergency services.

To determine the best location, we can combine both models and analyze the existing transportation routes, considering factors such as road capacity, traffic patterns, and potential obstacles. The optimal location would be one that balances the need for quick response times while providing equal access to emergency services for all subdivisions. This location should take into account existing infrastructure and be adaptable to any future growth in the city.

In conclusion, the optimal location for a fire station can be determined through the application of the centroid and minimax models, careful analysis of transportation routes, and consideration of the city's growth and development patterns. This will help ensure the fire station is strategically located to provide timely and efficient emergency response services to all subdivisions in the city.

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The model for the knowledge gain (v) as a function of the qualitative variable, homework assistance group is: v = β0 + β1G1 + β2G2 + ɛ, where G1, G2, and G3 are indicator variables for the groups receiving the completed solution, check figures, and no help respectively.

B's in the model represent the intercept (β0) and the differences in mean knowledge gain between the groups receiving completed solution (β1) and check figures (β2) compared to the group receiving no help.

The proposed model is a multiple linear regression model, where the dependent variable is the knowledge gain and the independent variable is the homework assistance group. The model includes three indicator variables to represent the three groups. The intercept (β0) represents the mean knowledge gain for the group that received no help.

The coefficients β1 and β2 represent the differences in mean knowledge gain between the groups receiving the completed solution and check figures respectively, compared to the group receiving no help.

The error term is represented by ɛ. This model allows us to compare the effectiveness of the different homework assistance methods on the knowledge gain of the accounting students.

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The Absolute minimum and maximum values of the function are:

Absolute minimum value = (0.1, 0.2)

Absolute maximum value = (1, 2)

We have,

The function f(x) = 2x is continuous and differentiable for all values of x in the interval [0.1, 1].

To find the absolute maximum and minimum values of f(x) on this interval, we need to find the critical points of the function, which are the points where the derivative of the function is zero or undefined, and the endpoints of the interval.

The derivative of f(x) is f'(x) = 2, which is a constant function that is always defined and never zero.

Therefore, there are no critical points in the interval [0.1, 1].

The endpoint values of the interval are f(0.1) = 0.2 and f(1) = 2.

Therefore, the absolute minimum value of f(x) on the interval [0.1, 1] is f(0.1) = 0.2, which occurs at x = 0.1,

The absolute maximum value of f(x) on the interval [0.1, 1] is f(1) = 2, which occurs at x = 1.

So, the location and value of the absolute extreme values of the function f(x) on the interval [0.1, 1] are:

Absolute minimum value: (0.1, 0.2)

Absolute maximum value: (1, 2)

Thus,

Absolute minimum value: (0.1, 0.2)

Absolute maximum value: (1, 2)

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a. The basis of P is {(-2, 2/3, 0), (2/3, -4, 2/3)}.

b. The projection of vector b into the plane P is (4/27, -8/27, 4/27).

c. The error vector is (23/27, -19/27, 50/27)

(a) To find a basis for the plane P, we need to find two linearly independent vectors that lie in the plane. One way to do this is to find two points on the plane and subtract them to get a vector that lies entirely in the plane. We can find two such points by setting x=0 and solving for y and z, and setting y=0 and solving for x and z, respectively:

Setting x=0, we get 3y + 2z = 0, so we can choose (0, -2/3, 1) as one point on the plane.

Setting y=0, we get x + 2z = 0, so we can choose (-2, 0, 1) as another point on the plane.

Subtracting these two points, we get a vector that lies entirely in the plane: v = (-2, 2/3, 0).

To find another linearly independent vector, we can take the cross product of v and the normal vector n = <1, 3, 2> of the plane:

v x n = (-2, 2/3, 0) x <1, 3, 2> = <2/3, -4, 2/3>.

So a basis for the plane P is {v, v x n} = {(-2, 2/3, 0), (2/3, -4, 2/3)}.

(b) To project b onto the plane P, we can use the formula for the projection of a vector v onto a subspace spanned by a basis {u1, u2, ..., um}:

proj_P(b) = ((b . u1)/||u1||^2)u1 + ((b . u2)/||u2||^2)u2 + ... + ((b . um)/||um||^2)um

where . denotes the dot product and ||u|| denotes the norm of u. Plugging in the values from part (a), we get:

proj_P(b) = ((b . v)/||v||^2)v + ((b . (v x n))/||(v x n)||^2)(v x n)

= ((<1, -1, 2> . <-2, 2/3, 0>)/||<-2, 2/3, 0>||^2)(-2, 2/3, 0) + ((<1, -1, 2> . <2/3, -4, 2/3>)/||<2/3, -4, 2/3>||^2)(2/3, -4, 2/3)

= (-2/9)(-2, 2/3, 0) + (-2/6)(2/3, -4, 2/3)

= (4/27, -8/27, 4/27).

So the projection of b onto the plane P is (4/27, -8/27, 4/27).

(c) The error vector e = b - proj_P(b) is the vector that connects the projection of b to b itself. So we can simply subtract the answer from part (b) from b to get:

e = b - proj_P(b) = (1, -1, 2) - (4/27, -8/27, 4/27)

= (23/27, -19/27, 50/27).

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Unicode value of 66, which is the letter "B". Therefore, the correct answer to this question is option B: "B".

The terms you mentioned are related to the Unicode character encoding standard and the concept of evaluating expressions. When discussing the expression "A" + 1, it's essential to note that the Unicode value for the character "A" is 65.

The expression "A" + 1 is attempting to add a numerical value (1) to a character ("A"). In many programming languages, this operation is allowed, and the result would be based on the Unicode values of the characters involved. Since the Unicode value for "A" is 65, adding 1 to it would result in a new Unicode value of 66. Consequently, the evaluated expression would correspond to the character with the Unicode value of 66, which is the letter "B". Therefore, the correct answer to this question is option B: "B".

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The expected standard deviation for a sample of size 14 with a percentage of success of 25%, assuming data follows a binomial distribution, is approximately 1.62 (option b).

To calculate the expected standard deviation, we can use the formula for the standard deviation of a binomial distribution:

SD = sqrt(npq)

where n is the sample size, p is the percentage of success, and q is the percentage of failure (q = 1 - p).

Substituting the values given, we get:

SD = sqrt(14 x 0.25 x 0.75)

SD = sqrt(2.625)

SD ≈ 1.62

Therefore, the expected standard deviation for a sample of size 14 with a percentage of success of 25%, assuming data follows a binomial distribution, is approximately 1.62. This means that the actual values of success in the sample are likely to vary from the expected value of 3.5 (14 x 0.25) by about 1.62 units.

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To find the first five terms of the sequence of partial sums for the given expression (-5)n+1/n!, we'll calculate each term and add them cumulatively.

1. S1: When n=1, term T1 = (-5)(1+1)/1! = -5/1 = -5
  So, S1 = T1 = -5

2. S2: When n=2, term T2 = (-5)(2+1)/2! = 15/2 = 7.5
  So, S2 = S1 + T2 = -5 + 7.5 = 2.5

3. S3: When n=3, term T3 = (-5)(3+1)/3! = -20/6 = -3.3333
  So, S3 = S2 + T3 = 2.5 - 3.3333 = -0.8333

4. S4: When n=4, term T4 = (-5)(4+1)/4! = 25/24 = 1.0417
  So, S4 = S3 + T4 = -0.8333 + 1.0417 = 0.2084

5. S5: When n=5, term T5 = (-5)(5+1)/5! = -30/120 = -0.25
  So, S5 = S4 + T5 = 0.2084 - 0.25 = -0.0416

The first five terms of the sequence of partial sums are: S1 = -5, S2 = 2.5, S3 = -0.8333, S4 = 0.2084, and S5 = -0.0416.

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According to the Pythagoras theorem, the value of x is 8.366.

Here we know that the the Pythagoras theorem states that in a right-angled triangle, the square of the length of the hypotenuse (the longest side) is equal to the sum of the squares of the lengths of the other two sides.

Mathematically, this can be expressed as:

c² = a² + b²

Where c is the length of the hypotenuse, and a and b are the lengths of the other two sides.

Based on this we have obtained the following three equations, they are

x² + z ² = 10

x² + 7² = y²

z² = y² + 3²

When we simplify these equations, then we get,

2z² = 60

z² = 30

z = 5.47

Then the value of x is obtained as

=>  x² = 100 - 30

=> x = √70 = 8.366

Finally, the value of y is calculated as

=> y² = x² - 7²

=> y² = 70 - 49 = 21

=> y = 4.58

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Yes, there is evidence at the a=0.05 level of a positive linear association between number of hours of studying and score on the final exam based on the regression analysis output.

To determine whether there is evidence of a positive linear association between the number of hours of studying and the score on the final exam, we need to conduct a hypothesis test.

The null hypothesis for this test is that there is no relationship between the number of hours of studying and the score on the final exam.

The alternative hypothesis is that there is a positive relationship between the two variables.

Let's set alpha at 0.05.

The computer output provides us with the estimated slope of the true regression line (1.806) and its standard error (0.745).

We can use this information to calculate the t-statistic for testing the null hypothesis.

t-statistic = (estimated slope - hypothesized slope) / standard error

where the hypothesized slope under the null hypothesis is zero.

So, the t-statistic is:

t = (1.806 - 0) / 0.745 = 2.426

Using a t-distribution table with 10 degrees of freedom (n - 2), we find that the critical value of t for a two-tailed test with alpha = 0.05 is approximately 2.306.

Since our calculated t-statistic (2.426) is greater than the critical value of t (2.306), we reject the null hypothesis and conclude that there is evidence at the 0.05 level of a positive linear association between the number of hours of studying and the score on the final exam.

We can say that as the number of hours of studying increases, the score on the final exam tends to increase as well.

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To find the matrix product, we first need to clarify the given matrices. Based on your input, I believe the matrices you provided are:

Matrix A:
[6 -6]
[3  2]
[7  0]

Matrix B:
[-1  1]
[ 5 -1]
[ 3  0]

Now, let's find the matrix product A * B, if possible.

Step 1: Check the dimensions of both matrices.
Matrix A has a dimension of 3x2, and Matrix B has a dimension of 3x2.

Step 2: Determine if the matrix product is possible.
The matrix product is possible if the number of columns in Matrix A is equal to the number of rows in Matrix B. In this case, Matrix A has 2 columns, and Matrix B has 3 rows. Since these numbers are not equal, it is not possible to find the matrix product A * B.

Your answer: The matrix product A * B is not possible in this case.

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Answer:

The interest rate is 10% annually, which means in one year, Nicci would earn 10% of $11,000, or $1,100. To find out how much interest she will earn in 3 months, we need to divide $1,100 by 4 (since there are 4 quarters of the year) and then multiply by 3 (since we want to find the interest earned in 3 months):

$1,100/4 = $275

$275 x 3 = $825

Nicci will earn $825 in interest in 3 months.

The other point where the tangent line is horizontal is (-5, 17).

To find where the tangent line is horizontal, we need to find the value of t that corresponds to that point on the curve.

First, we can find the derivative of y with respect to x using the chain rule:

dy/dx = dy/dt / dx/dt = (-30 sin(t)) / (5(cos(t) - sin(t))) = -6 tan(t)

Now we need to find the value of t that makes the derivative equal to zero, which is where the tangent line is horizontal:

-6 tan(t) = 0

tan(t) = 0

t = 0, π

So we need to find the corresponding values of x and y for t = 0 and t = π.

When t = 0, we have:

x = 5(sin(0) + cos(0)) = 5

y = 47 - 15cos²(0) - 30sin(0) = 32

So one point where the tangent line is horizontal is (5, 32).

When t = π, we have:

x = 5(sin(π) + cos(π)) = -5

y = 47 - 15cos²(π) - 30sin(π) = 17

So the other point where the tangent line is horizontal is (-5, 17).

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Answer:

see explanation

Step-by-step explanation:

using the identity

tan²x + 1 = sec²x ( subtract 1 from both sides )

tan²x = sec²x - 1 ← factor as a difference of squares

tan²x = (secx - 1)(secx + 1)

consider left side

[tex]\frac{tan^2x}{secx-1}[/tex]

= [tex]\frac{(secx-1)(secx+1)}{secx-1}[/tex] ← cancel (secx - 1) on numerator/ denominator

= secx + 1

= right side , hence proven

To prove that B can be rewritten as n = (1 - P) * 72, we'll follow these three steps:

Step 1: Start with the expression for B:

  B = (2 * a) / (24 * √(n))

Step 2: Substitute n with (1 - P) * 72:

  B = (2 * a) / (24 * √((1 - P) * 72))

Step 3: Simplify the expression:

  B = (2 * a) / (√(24 * (1 - P) * 72))

Let's break down each step:

Step 1:

Starting with the expression for B:

  B = (2 * a) / (24 * √(n))

Step 2:

Substituting n with (1 - P) * 72:

  B = (2 * a) / (24 * √((1 - P) * 72))

Step 3:

Simplifying the expression:

  B = (2 * a) / (√(24 * (1 - P) * 72))

At this point, we have shown that B can be rewritten as n = (1 - P) * 72.

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The volume when the region is revolved around the y-axis is 8.378. (option a).

To set up the integral, we need to express the radius and thickness of each disc in terms of y. Since the region is bounded by the curve √x, we can express the radius of each disc as √x. To find x in terms of y, we can square both sides of the equation y=√x to get x=y². Therefore, the radius of each disc is √(y²)=|y|.

To find the thickness of each disc, we need to determine the width of the region at each y-value. Since the region is bounded by the line y=2 and the y-axis, the width of the region is given by 2-y. Therefore, the thickness of each disc is (2-y).

We can now set up the integral to find the volume of the solid:

V = [tex]\int ^0 _2[/tex] π|y|²(2-y)dy

Simplifying the integral and evaluating it using the power rule of integration, we get:

V = π/3 [2³ - 0³ - (2/3)³]

V ≈ 8.378

Therefore, the answer is (A) 8.378.

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w = 10, the value of z is 1.8. In this inverse relationship, as w increases, the value of z decreases proportionally, maintaining their constant product of 18.

When two variables have an inverse relationship, their product remains constant. In this case, z varies inversely as w, which means that the product of z and w is always constant. We can express this relationship using the formula:

zw = k

where z and w are the variables, and k is the constant of variation.

We are given that z = 20 when w = 0.9. Using this information, we can find the value of k:

(20)(0.9) = k
18 = k

Now that we know the constant of variation, k, we can find the value of z when w = 10:

10z = 18

To find the value of z, we simply divide both sides of the equation by 10:

z = 18/10
z = 1.8

So, when w = 10, the value of z is 1.8. In this inverse relationship, as w increases, the value of z decreases proportionally, maintaining their constant product of 18.

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From the equation of line we can conclude that,

If the coordinate on y axis and the intercept are the same, the slope will be zero. When the slope is zero, the line is parallel to x-axis , so it will be horizontal. If the y- coordinate and the intercept are the same, the line will be vertical.

Without computing one can tell by looking at the ordered pairs, say (x, y) that a line will be horizontal or vertical.

The equation of line can be written as,

y = mx + c

where, m is the slope of the line and c is the intercept

By looking at the equation of line we can interpret that,

When the value of y is equal to that of the intercept c, then the slope of the line becomes zero for any value of x.

When the slope is zero and the line is horizontal then it is parallel to x- axis.

When the slope is zero and the line is vertical then it is parallel to y- axis.

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If a curve has a slope equal to zero at some point a, it means that at that point, the curve is neither increasing nor decreasing.

To the right of point a, the curve may continue to be horizontal (with a slope of zero) or it may start to increase or decrease. It all depends on the shape and direction of the curve beyond point a. If the curve continues to be horizontal, it means that it has a constant value to the right of point a. If the curve starts to increase, it means that its slope becomes positive. If the curve starts to decrease, it means that its slope becomes negative. So, the behavior of the curve to the right of point a depends on the shape and direction of the curve at and around point a.

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