A completely randomized design is useful when the experimental units are Select one: a. heterogeneous. b. stratified. c. clustered. d. homogeneous.

The value of the second integral is -109/3.

For the first integral, we can use the power rule and the constant multiple rule of integration:

∫413x 5x√ dx = [tex]4/3 \times 13x^{3/2 }\times 2/3 \times 5x3/2+1/2 + C[/tex]

= 40[tex]x^{5/2[/tex] / 15 + C

= 8[tex]x^{5/2[/tex] / 3 + C

where C is the constant of integration.

For the second integral, we can use the power rule and the constant multiple rule of integration:

∫[tex]^{16}_9 (-x^1/2-5)dx = (-2/3 \times x^(3/2) - 5x)^{16_9}[/tex]

= [tex](-2/3 \times 16^{(3/2)} - 5 \times 16) - (-2/3 \times 9^{(3/2)} - 5 \times 9)[/tex]

= (-2/3 × 64 - 80) - (-2/3 × 27 - 45)

= (-128/3 - 80) - (-54/3 - 45)

= -208/3 + 99/3

= -109/3

Therefore, the value of the second integral is -109/3.

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To evaluate ∫413x 5x√ dx, we can use integration by substitution. Let u = 5x√, then du/dx = 5/2x^1/2 and dx = 2/5u^2/5 du.

Substituting these into the integral, we get:

∫413x 5x√ dx = ∫4u u(2/5u^2/5) du

Simplifying:

∫413x 5x√ dx = 8/5 ∫u^7/5 du

Integrating:

∫413x 5x√ dx = 8/5 * (5/12)u^(12/5) + C

Substituting back in for u:

∫413x 5x√ dx = 2/3 x^(3/2) * (5x√)^(2/5) + C

Simplifying:

∫413x 5x√ dx = 2/3 x^(3/2) * (5x)^(2/5) + C

Now, to evaluate ∫^16_9 (-x^1/2-5)dx, we can use the power rule of integration:

∫^16_9 (-x^1/2-5)dx = [-2/3x^(3/2) - 5x] from 9 to 16

Substituting in the limits:

∫^16_9 (-x^1/2-5)dx = [-2/3(16)^(3/2) - 5(16)] - [-2/3(9)^(3/2) - 5(9)]

Simplifying:

∫^16_9 (-x^1/2-5)dx = [(-32/3) - 80] - [(-18/3) - 45]

∫^16_9 (-x^1/2-5)dx = -112/3

Therefore, the answer to the second integral is -112/3.
To evaluate the given integral ∫^16_9 (-x^(1/2) - 5) dx, we'll find the antiderivative of the function and then apply the Fundamental Theorem of Calculus.

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After enlarging triangle ABC with a scale factor of 3 about the origin (0, 0), the coordinates of A' and B' are (12, 0).

To find the coordinates of A' and B' after the enlargement, we can use the formula for enlarging a point (x, y) by a scale factor of k about a center point (h, k):

A' = (k * (A - O)) + O

B' = (k * (B - O)) + O

Given that AB = 4 cm and the scale factor is 3, we can assume that point O is the origin (0, 0).

Let's calculate A'

A' = (3 * (A - O)) + O

= 3 * (A - O) + O

= 3 * (4, 0) + (0, 0)

= (12, 0) + (0, 0)

= (12, 0)

Therefore, A' has the coordinates (12, 0).

Now let's calculate B'

B' = (3 * (B - O)) + O

= 3 * (B - O) + O

= 3 * (4, 0) + (0, 0)

= (12, 0) + (0, 0)

= (12, 0)

Therefore, B' also has the coordinates (12, 0).

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--The given question is incomplete, the complete question is given below " A triangle ABC is enlarged, about the point O as centre of enlargement, and the scale factor is 3. Find A'B', if AB = 4cm."--

14 vertices in this polyhedron.

Euler's formula, which states that for any polyhedron (a three-dimensional solid object with flat polygonal faces), the number of vertices (V), edges (E), and faces (F) are related by the equation:

V - E + F = 2

This formula is named after the mathematician Leonhard Euler, who first discovered it in the 18th century.

It's a fundamental result in geometry and has many important applications.

The polyhedron has 9 faces and 21 edges.

We can plug these values into Euler's formula and solve for the number of vertices:

V - 21 + 9 = 2

Simplifying the left-hand side, we get:

V - 12 = 2

Adding 12 to both sides, we get:

V = 14

So the polyhedron has 14 vertices.

Euler's formula is a powerful tool for analyzing polyhedra, and can be used to derive many other results in geometry.

It's also related to other important mathematical concepts, such as topology and graph theory.

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the eigenvalues of A are λ = 2 and μ = -2/3, with algebraic multiplicities 1 and 2, respectively.

We know that the trace of a matrix is the sum of its eigenvalues and the determinant is the product of its eigenvalues. Let the two distinct eigenvalues of A be λ and μ. Then, we have:

tr(A) = λ + μ + λ or μ (since the eigenvalues are distinct)

-3 = 2λ + μ ...(1)

det(A) = λμ(λ + μ)

-28 = λμ(λ + μ) ...(2)

We can solve this system of equations to find λ and μ.

From equation (1), we can write μ = -3 - 2λ. Substituting this into equation (2), we get:

-28 = λ(-3 - 2λ)(λ - 3)

-28 = -λ(2λ^2 - 9λ + 9)

2λ^3 - 9λ^2 + 9λ - 28 = 0

We can use polynomial long division or synthetic division to find that λ = 2 and λ = -2/3 are roots of this polynomial. Therefore, the eigenvalues of A are 2 and -2/3, and their algebraic multiplicities can be found by considering the dimensions of the eigenspaces.

Let's find the algebraic multiplicity of λ = 2. Since tr(A) = -3, we know that the sum of the eigenvalues is -3, which means that the other eigenvalue must be -5. We can find the eigenvector corresponding to λ = 2 by solving the system of equations (A - 2I)x = 0, where I is the 3 x 3 identity matrix. This gives:

|1-2 2 1| |x1| |0|

|2 1-2 1| |x2| = |0|

|1 1 1-2| |x3| |0|

Solving this system, we get x1 = -x2 - x3, which means that the eigenspace corresponding to λ = 2 is one-dimensional. Therefore, the algebraic multiplicity of λ = 2 is 1.

Similarly, we can find the algebraic multiplicity of λ = -2/3 by considering the eigenvector corresponding to μ = -3 - 2λ = 4/3. This gives:

|-1/3 2 1| |x1| |0|

| 2 -5/3 1| |x2| = |0|

| 1 1 5/3| |x3| |0|

Solving this system, we get x1 = -7x2/6 - x3/6, which means that the eigenspace corresponding to λ = -2/3 is two-dimensional. Therefore, the algebraic multiplicity of λ = -2/3 is 2.

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Based on the Year 2 balance sheet, the largest cash dividend that Dakota could pay is $16,500.

Cash dividends refers to the payments that companies make to their shareholders which is usually on the strength of earnings. They often represent opportunity for companies to share the benefit of business profits.

Based on the balance sheet, the largest cash dividend that Dakota could pay in Year 2 is:

= $ 31,500 + $ 5,000 - $ 20,000

= $ 16,500.

Missing questions:Dakota Company experienced the following events during Year 2:

Acquired $20,000 cash from the issue of common stock.

Paid $20,000 cash to purchase land.

Borrowed $2,500 cash.

Provided services for $40,000 cash.

Paid $1,000 cash for utilities expense.

Paid $20,000 cash for other operating expenses.

Paid a $5,000 cash dividend to the stockholders.

Determined that the market value of the land purchased in Event 2 is now $25,000.

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Answer:

2160/13.

Step-by-step explanation:

Exterior angle = 360/number of sides

Interior angle = 180 – exterior angle

exterior angle = 360/26

= 180/13.

interior angle = 180 - (180/13)

= 2160/13.

1. False   2. False    3. False

4. The distance between the shark and the bird is |1834 – 145| = 12634 feet.  False

To determine the truth value of each statement, we need to calculate the absolute differences between the given coordinates.

1: The distance between the fish and the dolphin is |–3812 – (–8414)| = |3812 + 8414| = 12226 feet.

Since the calculated distance is 12226 feet, the statement "The distance between the fish and the dolphin is 4534 feet" is false.

2: The distance between the shark and the dolphin is |–145 – 8414| = |-145 - 8414| = 8559 feet.

Since the calculated distance is 8559 feet, the statement "The distance between the shark and the dolphin is 22934 feet" is false.

3: The distance between the fish and the bird is |1834 – (–3812)| = |1834 + 3812| = 5646 feet.

Since the calculated distance is 5646 feet, the statement "The distance between the fish and the bird is 5714 feet" is false.

4: The distance between the shark and the bird is |1834 – 145| = |1834 - 145| = 1689 feet.

Since the calculated distance is 1689 feet, the statement "The distance between the shark and the bird is 12634 feet" is false.

Therefore:

False

False

False

False

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The statement that best describes the size of the cross section is C. The height of the cross section is the same as the height of the prism, and the width of the cross section is the same as the width of the faces of the prism.

If a triangular prism is cut at a right angle to its base, the resulting section will resemble and have the same dimensions as the original triangular base of the prism.

The altitude of the cross-sectional triangle will equal the altitude of the triangular base of the prism. In a similar manner, the width of the triangular shape (its cross-section) will match the width of the base of the prism.

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The required radius of the water bottle is approximately 2.88 cm.

To find the radius of the cylindrical water bottle, we can use the formula for the volume of a cylinder:

Volume = π * radius² * height

Given that the volume of the bottle is 207 cm³ and the height is 7.9 cm, we can rearrange the formula to solve for the radius:

207 = 3.14 * radius² * 7.9

Dividing both sides of the equation by (3.14 * 7.9), we get:

radius² = 207 / (3.14 * 7.9)

radius² = 8.308

radius = √(8.308)

radius ≈ 2.88 cm (rounded to two decimal places)

Therefore, the radius of the water bottle is approximately 2.88 cm.

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The child who received more land if the land was divided evenly among them compared to the way the mother divided it is Sofia. Option (d) is correct.

A mother divided her land of 141/4 acres among her 5 adopted adult children such that Samuel received 11 acres, Sophia received 9 acres, Anthony received 8 acres, Jasmine received 5 acres, and Juan received 4 1/4 acres.

Among the given children, the child who received more land if the land was divided evenly among them compared to the way the mother divided it is Sofia.

To determine the land received by each child if the land was divided evenly among them, divide the total area by the number of children.

Therefore, each child would receive 141/4 ÷ 5 acres.

141/4 ÷ 5 = 113/20 ≈ 5.65 acres.

(to two decimal places)

Approximately, each child would receive 5.65 acres of land.

Which is not how the mother divided her land among the children.

Now, let's compare the area of land that each child received with the 5.65 acres they would have received if the land was divided evenly among them.Samuel received 11 acres.

11 > 5.65

So, Samuel received more land than they would have received if the land was divided evenly among them.Sophia received 9 acres.

9 < 5.65

So, Sophia received less land than they would have received if the land was divided evenly among them.

Anthony received 8 acres.

8 < 5.65

So,

Anthony received less land than they would have received if the land was divided evenly among them.

Jasmine received 5 acres.

5 = 5.65

So, Jasmine received the same land as they would have received if the land was divided evenly among them.

Juan received 4 1/4 acres.

21/4 = 5.25 and

5.25 < 5.65

So, Juan received less land than they would have received if the land was divided evenly among them.

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To find the length l of the graph of the polar equation r = e^(2θ) for 0 ≤ θ ≤ π, we can use the arc length formula for polar curves.   Answer :  0.

The arc length formula for a polar curve r = f(θ) is given by:

l = ∫[a, b] √(r^2 + (dr/dθ)^2) dθ,

where a and b are the starting and ending angles.

In this case, we have r = e^(2θ), so dr/dθ = 2e^(2θ). Substituting these values into the arc length formula, we get:

l = ∫[0, π] √(e^(4θ) + (2e^(2θ))^2) dθ

 = ∫[0, π] √(e^(4θ) + 4e^(4θ)) dθ

 = ∫[0, π] √(5e^(4θ)) dθ

 = √5 ∫[0, π] e^(2θ) dθ.

To evaluate this integral, we can use the substitution u = 2θ, du = 2dθ:

l = √5 ∫[0, π] e^(2θ) dθ

 = √5 ∫[0, 2π] e^u (du/2)

 = √5 (1/2) ∫[0, 2π] e^u du

 = (√5/2) [e^u] evaluated from 0 to 2π

 = (√5/2) (e^(2π) - e^0)

 = (√5/2) (1 - 1)

 = 0.

Therefore, the length l of the graph of the polar equation r = e^(2θ) for 0 ≤ θ ≤ π is 0 units.

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The power booster can be operated by engine vacuum or through hydraulic pressure, which is usually generated by the power steering pump or an electric-driven pump.

Therefore, the terms "hydraulic pressure" and "power steering pump" are relevant to the operation of the power booster.The power booster, also known as the brake booster, is a device that helps in applying more force to the brakes with less pressure on the brake pedal. This results in an enhanced braking performance. The power booster can be operated using either of two methods:

Engine vacuum, or Hydraulic pressure, which is produced by the power steering pump or an electric-driven pump.

In both methods, the power booster serves to augment the force that is applied to the brake master cylinder.

This increases the hydraulic pressure that is applied to the brakes, resulting in an enhanced braking performance.

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The chain rule is a formula in calculus that describes how to compute the derivative of a composite function.

We can use the product rule and the chain rule to find the derivatives of g(x) and h(x):

(a) Using the product rule and the chain rule, we have:

g'(x) = f'(x)sin(x) + f(x)cos(x)

At x=3, we know that f(3) = 2 and f'(3) = -3, so:

g'(3) = f'(3)sin(3) + f(3)cos(3) = (-3)sin(3) + 2cos(3)

Therefore, g'(3) = -3sin(3) + 2cos(3).

(b) Using the product rule and the chain rule, we have:

h'(x) = f'(x)cos(x) - f(x)sin(x)

At x=3, we know that f(3) = 2 and f'(3) = -3, so:

h'(3) = f'(3)cos(3) - f(3)sin(3) = (-3)cos(3) - 2sin(3)

Therefore, h'(3) = -3cos(3) - 2sin(3).

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The statement "The interaction prepares Louisa for the disappointment that Niles will likely not publish her book" best describes the purpose of the clerk's interaction with Louisa in scene 2.

With elegance and wit characteristic of author Jane Austen's writing style, "Pride and Prejudice" transports readers into England's early 19th century society where main character Elizabeth Bennet endeavors to find love within societal conventions that demand she secure a marriage partner.

Similarly positioned is her friend Louisa who pursues potential suitors while also seeking publication for her own written works. However, when seeking aid from a publishing house, Louisa encounters an unencouraging clerk who highlights the challenges of publication within the industry.

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The limaçon has a characteristic loop is evident in the Cartesian equation. e.

The given equation is in polar form and it represents a limaçon.

We can convert this equation into Cartesian form using the following equations:

x = r cosΘ()

y = r sin(Θ)

Substituting r = 3 cos(Θ) get:

x = 3 cos(Θ) cos(Θ)

= 3 cos²(Θ)

y = 3 cos(Θ) sin(Θ)

= 3 sin(Θ) cos(Θ)

= (3/2) sin(2Θ)

The Cartesian equation of the curve is:

x²/9 + y²/27 = cos²(Θ) + (1/4)sin²(2Θ)

This equation represents a limaçon is a type of curve formed by a point moving around a fixed point while a second point moves around the first.

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(a) The standard deviation of the sample mean is 1.94 (rounded to two decimal places).

(b) How large should the sample be to achieve a halved standard deviation of the sample mean?

To find the standard deviation of the sample mean (also known as the standard error), we divide the population standard deviation by the square root of the sample size. Given that the population has a variance of 25, the standard deviation is √25 = 5. Since we are working with a sample size of 54, we divide the population standard deviation by the square root of 54 to obtain the standard deviation of the sample mean, which is approximately 1.94 when rounded to two decimal places.

To halve the standard deviation of the sample mean, we need to increase the sample size. The standard deviation of the sample mean decreases as the square root of the sample size increases. In other words, if we want to halve the standard deviation, we need to quadruple the sample size. Therefore, the sample size should be increased to 216 (54 * 4) in order to achieve this reduction.

In conclusion, the standard deviation of the sample mean for a random sample of size 54 is approximately 1.94. To halve the standard deviation, the sample size should be increased to 216.

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Asymptotes are typically found in rational functions (ratios of polynomials) or logarithmic or exponential functions.

An asymptote is a straight line that a curve approaches but never touches.

In other words, it is a line that the function gets closer and closer to but never actually intersects.
Now, let's take a look at the function f(x) = [tex]x^2[/tex]/x.

This function can be simplified to f(x) = x.

Therefore,

The graph of this function is simply a straight line passing through the origin with a slope of 1.
Since the graph of this function is a straight line, it does not have any vertical or horizontal asymptotes.

However, it is worth noting that the function has a hole at x = 0, since the value of the function is undefined at that point.
In summary, the equation of each asymptote for the function f(x) = x^2/x is as follows:
- There is no vertical asymptote.
- There is no horizontal asymptote.

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The equations of the asymptotes for the given function are:

Vertical asymptotes: x1 = 0 and x = 0

Horizontal asymptotes: None

Slant asymptote: y = x.

Since the given function is a rational function, it may have vertical, horizontal, and slant asymptotes.

Vertical Asymptotes:

The vertical asymptotes occur at those values of x where the denominator of the function becomes zero. Here, the denominator is x1x, so the vertical asymptotes are given by x1 = 0 and x = 0.

Horizontal Asymptotes:

To find the horizontal asymptotes, we can compare the degrees of the numerator and the denominator of the function. Here, the degree of the numerator is 2 and the degree of the denominator is 3, so there is no horizontal asymptote.

Slant Asymptotes:

Since the degree of the numerator is less than the degree of the denominator by exactly 1, we can find the slant asymptote by long division of the numerator by the denominator. Performing long division, we get:

x2 x1 x = (x + 0)x1 x - 0

So the slant asymptote is y = x.

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, f'(x) is increasing on the intervals (-infinity, -2sqrt(14)) and (2sqrt(14), infinity), and decreasing on the interval (-2sqrt(14), 2sqrt(14)).

To find the intervals on which f'(x) is increasing or decreasing, we need to first find the critical points of f(x), i.e., the values of x where f'(x) = 0 or where f'(x) does not exist. Then, we can use the first derivative test to determine the intervals of increase and decrease.

We have:

f'(x) = x^2 - 56

Setting f'(x) = 0, we get:

x^2 - 56 = 0

Solving for x, we obtain:

x = ±sqrt(56) = ±2sqrt(14)

So, the critical points of f(x) are x = -2sqrt(14) and x = 2sqrt(14).

Now, we can use the first derivative test to find the intervals of increase and decrease. We construct a sign chart for f'(x) as follows:

|       -    2sqrt(14)   +    2sqrt(14)   +

f'(x) | - 0 + 0 +

From the sign chart, we see that f'(x) is negative on the interval (-infinity, -2sqrt(14)), and positive on the interval (-2sqrt(14), 2sqrt(14)) and (2sqrt(14), infinity).

Therefore, f'(x) is increasing on the intervals (-infinity, -2sqrt(14)) and (2sqrt(14), infinity), and decreasing on the interval (-2sqrt(14), 2sqrt(14)).

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Here is the rule

y = (x - h)² + k

Vertex = (h, k)

The vertex represents the lowest point on the graph, or the minimum value of the quadratic function.

y= (x - 1)² + 2

Vertex = (1, 2)

Second graph or the middle picture one

The length on the blueprint is approximately 0.2667 units.

To find the length on the blueprint, we can set up a proportion using the given information.

Let's denote the length on the blueprint as "x".

According to the blueprint, the width is 4 inches, and the actual length is 20 feet. We can set up the following proportion:

Width on Blueprint / Actual Width = Length on Blueprint / Actual Length

Plugging in the values:

4 inches / 20 feet = x / 16 feet

Now, we need to convert the units to be consistent. Since we have feet in the denominator on both sides, we can convert inches to feet by dividing by 12:

(4 inches / 12 feet) / 20 feet = x / 16 feet

Simplifying:

1/3 / 20 = x / 16

Now, we can cross multiply:

(1/3) × 16 = 20 ×x

Simplifying further:

16/3 = 20x

To solve for x, we can divide both sides by 20:

(16/3) / 20 = x

Simplifying:

16 / (3 × 20) = x

16 / 60 = x

Now, we can simplify the fraction:

4/15 = x

So, the length on the blueprint is 4/15 of a unit.

Alternatively, if you want to convert the fraction to decimal form, you can divide 4 by 15:

4 ÷ 15 ≈ 0.2667

Therefore, the length on the blueprint is approximately 0.2667 units.

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The equation of the tangent line in slope-intercept form is y = 67x - 40.

To find the point on the function when x = 1, we simply substitute x = 1 into the given equation:

y = (1+2)(2(1)^2+3)^3 = 27

So the point on the function when x = 1 is (1,27).

To find the slope of the tangent line when x = 1, we take the derivative of the given function and evaluate it at x = 1:

y' = (2x^2+7x+6)(2x^2+3)^2 + 3(x+2)(4x^3+18x^2+18x)

y'(1) = (2(1)^2+7(1)+6)(2(1)^2+3)^2 + 3(1+2)(4(1)^3+18(1)^2+18(1))

= 67

So the slope of the tangent line when x = 1 is 67.

Using the point-slope form of the equation of a line, we can write the equation of the tangent line when x = 1 as:

y - 27 = 67(x - 1)

Simplifying, we get:

y = 67x - 40

So the equation of the tangent line in slope-intercept form is y = 67x - 40.

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Answer:

Step-by-step explanation:

1. Sherelle's reasons for saying that the 1916 coin is most likely in her bag:

She might argue that she is older than Venita and therefore more likely to have inherited the coin from their grandmother.

She might claim that she has a special connection to their grandmother and was entrusted with the coin as a keepsake.

Sherelle might suggest that she has been collecting coins for a longer time than Venita and is more likely to have come across the 1916 coin in her collection.

Venita's reasons for saying that the 1916 coin is most likely in her bag:

She might argue that she has a strong interest in history and specifically coins, making her more likely to have acquired the 1916 coin through her own efforts.

Venita might claim that she has been studying and researching coins extensively, including the history and value of different years, making her more aware of the significance of the 1916 coin.

She might suggest that she recently found the 1916 coin at a coin shop or auction and specifically placed it in her bag for safekeeping.

Considering the information provided, it is difficult to determine with certainty whose bag is more likely to contain the 1916 coin. Both Sherelle and Venita present valid arguments based on their personal circumstances and interests. Without additional information, it is impossible to make an accurate judgment. It would be helpful to investigate further or ask their grandmother directly to determine the true location of the 1916 coin.

2. To find the five-number summary and construct the box-and-whisker plots for each data set, we need to arrange the numbers in ascending order.

Sherelle's data set: 26, 39, 56, 58, 60, 62, 65, 66, 66, 68, 71, 72, 72, 73, 74, 75, 81, 83, 84, 85

Venita's data set: 44, 45, 51, 51, 53, 53, 55, 57, 58, 62, 65, 66, 69, 69, 70, 73, 75, 77, 78, 79

Now we can find the five-number summary for each data set:

Sherelle's data set:

Minimum: 26

First quartile (Q1): 58

Median (Q2): 68

Third quartile (Q3): 75

Maximum: 85

Venita's data set:

Minimum: 44

First quartile (Q1): 53

Median (Q2): 65

Third quartile (Q3): 73

Maximum: 79

Sherelle might give the following reasons for saying that the 1916 coin is most likely in her bag:

Higher frequency of older coins: If Sherelle's bag has a higher proportion of older coins in general, it increases the likelihood of finding a coin from 1916. She could argue that her bag contains more coins from earlier years, making it more probable to have a coin from 1916.

Coin distribution pattern: If Sherelle's bag follows a pattern where the older coins tend to be grouped together, she may believe that the 1916 coin is more likely to be in her bag. She might argue that her bag contains a cluster of coins from the early 1900s, increasing the chance of having the specific 1916 coin.

On the other hand, Venita might give the following reasons for saying that the 1916 coin is most likely in her bag:

Higher randomness in coin selection: If Venita's bag has a more diverse mix of coins from various years, she could argue that the chances of having the 1916 coin are higher. She might claim that her bag includes a wider range of years, making it more likely to contain the specific coin from 1916.

Equal probability: Venita might believe that since the coin is equally likely to be in either bag, the probability is 50/50. She may argue that there is no reason to assume the 1916 coin is more likely to be in Sherelle's bag.

Considering the information provided, it is difficult to determine which bag is more likely to contain the 1916 coin. Without additional information about the distribution or characteristics of the coins in each bag, it would be purely speculative to make a definitive conclusion. Both Sherelle and Venita have their own reasons, but ultimately, it is a matter of chance unless further information is available.

False, the number of true arithmetical statements involving positive integers, +, x,(,) and = is countable, i.e. "(17+31) x 2 = 96".

The number of true arithmetical statements involving positive integers, +, x,(,) and = is uncountable. There are infinitely many true arithmetical statements involving positive integers and the other specified symbols. For any given set of positive integers, there are infinitely many arithmetic statements that can be formed using those integers and the symbols. Additionally, there are infinitely many possible sets of positive integers that could be used to form arithmetic statements. Therefore, the total number of true arithmetical statements involving positive integers, +, x,(,) and = is uncountable. It's worth noting that the set of possible arithmetical statements involving positive integers, +, x,(,) and = is a subset of the set of all possible mathematical statements involving those symbols, which is itself uncountable.

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All values of b that prove Stella's claim is not correct by making the rate of change of function B greater than the rate of change of function A are:

D. 15

E. 17

In Mathematics and Geometry, the rate of change (slope) of any straight line can be determined by using this mathematical equation;

Rate of change = (Change in y-axis, Δy)/(Change in x-axis, Δx)

Rate of change = rise/run

Rate of change = (y₂ - y₁)/(x₂ - x₁)

When b = 6, the rate of change of function B is given by:

Rate of change = (6 - 3)/(4 - 1)

Rate of change = 3/3

Rate of change = 1 (not greater than 3).

When b = 12, the rate of change of function B is given by:

Rate of change = (12 - 3)/(4 - 1)

Rate of change = 9/3

Rate of change = 3 (not greater than 3).

When b = 15, the rate of change of function B is given by:

Rate of change = (15 - 3)/(4 - 1)

Rate of change = 12/3

Rate of change = 4 (greater than 3).

When b = 15, the rate of change of function B is given by:

Rate of change = (17 - 3)/(4 - 1)

Rate of change = 14/3

Rate of change = 4.7 (greater than 3).

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Missing information:

Select all values of b that prove Stella's claim is not correct by making the rate of change of function B greater than the rate of change of function A.

6

8

12

15

17

The height of the given cone is 6.75 cm.

Given that, the volume of a cone is 324π cm² and the length of the diameter is 24 cm.

Here, radius of the cone = 24/2 = 12

We know that, the volume of the cone is 1/3 πr²h.

Now, 1/3 πr²h = 1/3 π×12²h

324π = 1/3 π×12²×h

324 = 1/3 ×144×h

324 = 48h

h=324/48

h=6.75 cm

Therefore, the height of the given cone is 6.75 cm.

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The surface area of the given pyramid, can be found to be A. 648 square units.

First find the area of the square base :

= 12 x 12

= 144 square units

Then find the area of a single triangular face of the regular pyramid :

= 1 / 2 x base  x height

= 1 / 2 x 12 x 21

= 126 square units

Seeing as there are 4 triangular faces, the total area would then be:

= 144 + ( 126 x 4 triangular faces )

= 648 square units

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The confidence interval (0.068,0.142) in the form of p-E«p is p - E < p < p + E, where p = 0.105 and E = 0.037.

To express the confidence interval (0.068, 0.142) in the form of p ± E, we first need to find the sample proportion p and the margin of error E.

The sample proportion p is the midpoint of the confidence interval, so we have:

p = (0.068 + 0.142) / 2 = 0.105

The margin of error E is half the width of the confidence interval, so we have:

E = (0.142 - 0.068) / 2 = 0.037

Therefore, we can express the confidence interval (0.068, 0.142) in the form of p ± E as:

p - E < p < p + E

0.105 - 0.037 < p < 0.105 + 0.037

0.068 < p < 0.142

So the confidence interval (0.068, 0.142) can be expressed as p - E < p < p + E, where p = 0.105 and E = 0.037.

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The value of the line integral ∫c f · dr is 1.885.

To evaluate the line integral ∫c f · dr, where c is given by the vector function r(t) and f(x,y) = xyi + 6y²j, we need to first parameterize the curve c using the given vector function r(t).

r(t) = 15t⁵i + t⁵j

The curve c starts at the point (0,0) when t=0 and ends at the point (15,1) when t=1.

Next, we need to calculate the differential of r(t) with respect to t:

dr/dt = 75t⁴i + 5t⁴j

We can now substitute the parameterization of c and the differential dr/dt into the formula for line integrals to get:

∫c f · dr = ∫[0,1] f(r(t)) · (dr/dt) dt

= ∫[0,1] (15t⁶)(t⁵)i + 6(t⁵)²(j) · (75t⁴i + 5t⁴j) dt

= ∫[0,1] (15t¹¹) dt + ∫[0,1] (6t¹⁰) dt

=[tex](15/12)t^{12} |_0^1 + (6/11)t^{11} |_0^1[/tex]

= (15/12) + (6/11)

= 1.885

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The half-angle x/2 lies in the range 90° < x/2 < 135° (Quadrant II) and has a sine value of √(25/34).

Based on the given information, cos(x) = -8/17, and the angle x lies in the range 180° < x < 270°, which places it in Quadrant III. In this quadrant, cosine is negative, which confirms the value of cos(x). Now, we need to find the half-angle (x/2) and determine its range.

Since x is in Quadrant III, the angle x/2 will lie in the range 90° < x/2 < 135°, placing it in Quadrant II. In this quadrant, sine and cosine have opposite signs, so while cos(x) is negative, sin(x/2) will be positive. To find the value of sin(x/2), we can use the half-angle identity:

sin(x/2) = ±√[(1 - cos(x))/2] = √[(1 - (-8/17))/2] = √(25/34)

Since x/2 is in Quadrant II, sin(x/2) must be positive, so we take the positive square root:

sin(x/2) = √(25/34)

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