a random sample of 81 automobiles traveling on a section of an interstate showed an average speed of 60 mph. the distribution of speeds of all cars on this section of highway is normally distributed, with a standard deviation of 13.5 mph. the value to use for the standard error of the mean is select one: a. 2.26 b. 13.6 c. 1.5 d. 9

There are 17550 ways to choose a president, a vice president and a treasurer.

Given that, in a third grade group of a school there are 27 students. Three of these are brothers. The group's board of directors must be formed by electing a president, a vice president and a treasurer.

So, we need to find that in how many ways they should be chosen,

Using the concept of permutation,

ⁿPₓ = n! / (n-x)!

Here, n = 27, x = 3,

So,

²⁷P₃ = 27!/(27-3)!'

= 27!/(24)!

= 27 × 26 × 25 × 24! / 24!

= 27 × 26 × 25

= 17550

Hence there are 17550 ways to choose a president, a vice president and a treasurer.

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The translated question is = Consider the following scenario:

In a third grade group of a school there are 27 students. Three of these are brothers. The group's board of directors must be formed by electing a president, a vice president and a treasurer. According to the information provided, how many ways can Group Policy be chosen.

The cylinder has a larger volume than the cone by 167.55 cubic centimeters.

The cups at Sally's Sweet Shoppe have a diameter of 8 centimeters, so the radius of the cups is 4 centimeters.

The height of the cups is 5 centimeters.

For the cylinder, we have:

Volume of cylinder = π × 4² × 5

= 80π cubic centimeters

For the cone, we have:

Volume of cone = (1/3)× π × 4² × 5

= 80/3π cubic centimeters

Comparing the two volumes, we can see that the cylinder has the larger volume.

The difference in volume between the cylinder and the cone is:

Volume of cylinder- Volume of cone = 80π - (80/3)π

= (240/3)π - (80/3)π

= (160/3)π

= 167.55 cubic centimeters

Therefore, the cylinder has a larger volume than the cone by approximately 167.55 cubic centimeters.

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In order to determine which person's sampling distribution closely approximates the population distribution, we need to compare the number of students in each sample to the total population of students. Without knowing the size of the population or the characteristics of the population, it's difficult to make an exact determination.

However, we can make some generalizations based on the table.

If the number of students in each sample is relatively small compared to the total population of students, then none of the individuals' sampling distributions are likely to closely approximate the population distribution. This is because small sample sizes are more likely to produce results that deviate from the true population distribution.

On the other hand, if the number of students in each sample is relatively large compared to the total population of students, then it's more likely that one of the individuals' sampling distributions will closely approximate the population distribution.

person's sampling distribution was most likely to closely approximate the population distribution, Based on the information given in the table, it appears that Mark's sampling distribution has the largest sample sizes, which makes it more likely that his sampling distribution will closely approximate the population distribution. However, without additional information about the size and characteristics of the population, we can't say for sure which person's sampling distribution is the best approximation of the population distribution.

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Answer:

$30.00

Step-by-step explanation:

[tex]\frac{18}{3}[/tex] = [tex]\frac{x}{5}[/tex]      9 x 2 = 18.  They made 18 in 3 hours.

3 ([tex]\frac{5}{3}[/tex]) = 5

18 ([tex]\frac{5}{3}[/tex]) is the same as 6 x 5 = 30

Helping in the name of Jesus

The probability of picking three red bulbs with replacement is 0.3456.

The probability of picking three red bulbs without replacement is 0.2211.

(a) With replacement:

If the bulbs are selected with replacement, the probability of selecting a The no. of the red bulb is 60

Probability for red bulb = 60/100 = 0.6

The number of green bulb = 40

Probability of  green bulb = 40/100 = 0.4.

Using the binomial probability formula:

P (X = 3) = (4 choose 3) * (0.6)^3 * (0.4)^1

= 4 * 0.216 * 0.4

= 0.3456

(b) Without replacement:

If the bulbs are selected without replacement, the probability of selecting a red bulb on the first draw is 60/100 = 0.6

The probability of selecting a red bulb on the second draw is 59/99,

The probability of choosing a red bulb on the third draw, given that the preferably two draws were red, is 58/98.

The probability of selecting a green bulb on the 4th draw is 40/97.

the probability will be:

P(3R, 1G) = (60/100) * (59/99) * (58/98) * (40/97)

= 0.2211

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To find the position of the particle, we need to integrate the acceleration function twice with respect to time, starting from the initial conditions of position and velocity.

Given:

a(t) = 2t + 9 (acceleration function)

s(0) = 8 (initial position)

v(0) = -4 (initial velocity)

First, let's integrate the acceleration function to find the velocity function:

v(t) = ∫(2t + 9) dt

    = t^2 + 9t + C1

Using the initial velocity condition, we can solve for the constant C1:

v(0) = 0^2 + 9(0) + C1 = -4

C1 = -4

Therefore, the velocity function becomes:

v(t) = t^2 + 9t - 4

Next, we integrate the velocity function to find the position function:

s(t) = ∫(t^2 + 9t - 4) dt

    = (1/3)t^3 + (9/2)t^2 - 4t + C2

Using the initial position condition, we can solve for the constant C2:

s(0) = (1/3)(0^3) + (9/2)(0^2) - 4(0) + C2 = 8

C2 = 8

Therefore, the position function becomes:

s(t) = (1/3)t^3 + (9/2)t^2 - 4t + 8

Thus, the position of the particle is given by the function s(t) = (1/3)t^3 + (9/2)t^2 - 4t + 8.

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Therefore, the area of a piece of pie is 10.60 square inches.

To find the area of a pie with a 9-inch diameter, we can use the formula for the area of a circle:

A = πr²

where r is the radius of the circle. Since the diameter of the pie is 9 inches, the radius is half of that, or 4.5 inches. So we can plug this value into the formula to get:

A = π(4.5)²

Simplifying, we get:

A = π(20.25)

A = 63.62 square inches (rounded to two decimal places)

This is the total area of the pie.

Since the pie is divided into 6 equal slices, we can divide the total area by 6 to get the area of each slice. So we can calculate the area of each slice as:

63.62 / 6 = 10.60 square inches (rounded to two decimal places)

Therefore, each slice of the pie has an area of approximately 10.60 square inches.

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The statement "if f '(x) > 0 for 6 < x < 8, then f is increasing on (6, 8)" is True because the function is getting steeper as x increases.

For a given function, y = F(x), if the value of y increases on increasing the value of x, then the function is known as an increasing function, and if the value of y decreases on increasing the value of x, then the function is known as a decreasing function.
If f '(x) > 0 for 6 < x < 8, it means that the function f is increasing on the interval (6, 8).

This is because a positive derivative indicates that the slope of the tangent line to the curve at any point in the interval is positive, which means that the function is getting steeper as x increases.

Therefore, f is increasing on the interval (6, 8).

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Answer:

Step-by-step explanation:

To find the value of y in the given expression, we need to identify the terms that involve y. The given expression is: 1y^2 + 0y + 12y^2 s^3 yxy^2 dxdy.

Since we want to find y, let's focus on the terms that have y:

1y^2, 0y, and 12y^2 s^3 yxy^2 dxdy.

Now, let's simplify these terms:

1y^2 = y^2

0y = 0 (since anything multiplied by 0 is 0)

12y^2 s^3 yxy^2 dxdy = 12y^3 x^2 s^3 dxdy (since y * y^2 = y^3)

So, the simplified expression involving y is:

y^2 + 0 + 12y^3 x^2 s^3 dxdy

without any additional information, such as an equation or a specific value for y, it is impossible to determine the exact value of y.

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We can remove v3 from the set of vectors that span H, and check if the remaining vectors are linearly independent. We found that v1 and v2 are linearly independent, and therefore a basis for H is {v1, v2}.

To find a basis for H, we need to find a set of linearly independent vectors that span H. We know that 4v1+5v2-3v3=0, which means that v3 can be expressed as a linear combination of v1 and v2.

So, we can remove v3 from the set and still have a set of vectors that span H. Now, we need to check if v1 and v2 are linearly independent. We can do this by setting up the following equation:

c1v1 + c2v2 = 0

where c1 and c2 are constants.

Substituting the values of v1 and v2, we get:

c1(4, -3, 7) + c2(1, -9, -2) = (0, 0, 0)

Solving for c1 and c2, we get c1 = -5 and c2 = -2. Therefore, v1 and v2 are linearly independent.

Thus, a basis for H is {v1, v2}. These two vectors span H and are linearly independent, which means that they form a basis for H.

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When you have a population that does not allow for probability sampling, one way of stating your findings that is appropriate is to use non-probability sampling techniques.

These techniques involve selecting participants based on a specific set of criteria or characteristics, such as convenience sampling or purposive sampling. While these methods do not ensure that every member of the population has an equal chance of being selected, they can still provide valuable insights into the characteristics and trends of the group being studied. It is important to acknowledge the limitations of these sampling methods in your research and to use them appropriately to ensure the validity and reliability of your findings.

When you have a population that does not allow for probability sampling, one way of stating your findings is through non-probability sampling methods. Non-probability sampling involves selecting participants based on subjective criteria, rather than random selection. Examples of non-probability sampling techniques include convenience sampling, quota sampling, and snowball sampling. Although these methods may introduce potential biases and limit generalizability, they can be useful for exploring specific characteristics or gaining insights in populations where probability sampling is not feasible or practical. In such cases, researchers should acknowledge the limitations and interpret findings cautiously.

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Answer:

Range = highest number - lowest number

Let h be the highest number.

6 = h - 4, so h = 10

The missing number is 10.

The probability that Anna picks out two red sweets and eat them is equal to (x² - x)/870 in terms of x.

The probability of an event occurring is the fraction of the number of required outcome divided by the total number of possible outcomes.

The total possible outcome = 30

number of red sweets = x

number of blue sweets = 30 - x

probability of Anna picks out 2 red sweets = x/30 × (x -1)/29

probability of Anna picks out 2 red sweets = (x² - x)/870

Therefore, the probability that Anna picks out two red sweets and eat them is equal to (x² - x)/870 in terms of x.

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The projection of v along u is ∥=⟨(13/2), (13/2)⟩.

To find the projection ∥=⟨,⟩ of =⟨6,7⟩ along =⟨1,1⟩, we first need to find the unit vector in the direction of =⟨1,1⟩. This can be done by dividing =⟨1,1⟩ by its magnitude:

||⟨1,1⟩|| = √(1^2 + 1^2) = √2
unit vector in the direction of =⟨1,1⟩: =⟨1/√2, 1/√2⟩

Next, we need to find the dot product of =⟨6,7⟩ and the unit vector in the direction of =⟨1,1⟩:

⟨=⟨6,7⟩, =⟨1/√2, 1/√2⟩⟩ = (6/√2) + (7/√2) = 13√2

Finally, we can use the dot product to find the projection ∥=⟨,⟩ of =⟨6,7⟩ along =⟨1,1⟩:

∥=⟨,⟩ = (⟨=⟨6,7⟩, =⟨1/√2, 1/√2⟩⟩ / ||⟨1,1⟩||^2) * =⟨1,1⟩
= (13√2 / 2) * =⟨1,1⟩
= ⟨13√2 / 2, 13√2 / 2⟩

Therefore, the projection ∥=⟨,⟩ of =⟨6,7⟩ along =⟨1,1⟩ is ⟨13√2 / 2, 13√2 / 2⟩.
Hi! I'd be happy to help you find the projection of vector v along vector u. Given the terms "∥=⟨,⟩", "projection", "v=⟨6,7⟩", and "u=⟨1,1⟩", here's the step-by-step explanation to find the projection:

Step 1: Find the dot product of v and u.
v = ⟨6,7⟩
u = ⟨1,1⟩
v∙u = (6*1) + (7*1) = 6 + 7 = 13

Step 2: Find the magnitude of u squared.
|u|^2 = (1^2) + (1^2) = 1 + 1 = 2

Step 3: Calculate the scalar projection.
scalar_proj = (v∙u) / |u|^2 = 13 / 2

Step 4: Multiply the scalar projection by the unit vector u.
proj_v = scalar_proj * u = (13/2) * ⟨1,1⟩ = ⟨(13/2), (13/2)⟩

So, the projection of v along u is ∥=⟨(13/2), (13/2)⟩.

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To find the average value of ove over the cube in the first octant bounded by the coordinate planes and the planes x = 4, y = 4, and z = 4, we need to calculate the volume of the cube and the triple integral of ove over that volume.


To evaluate this triple integral, we need to know the expression for ove. Since it is not given in the question, we cannot proceed further.

1. Identify the region of interest: The first octant is the region where x, y, and z are all non-negative. The cube is bounded by the coordinate planes (x = 0, y = 0, and z = 0) and the planes x = 4, y = 4, and z = 4.

2. Determine the volume of the cube: Since the cube has sides of length 4 (from 0 to 4 for each coordinate), its volume (V) is 4 x 4 x 4 = 64 cubic units.

3. Calculate the average value: The average value of a function over a region can be found by integrating the function over that region and dividing it by the region's volume. Since you did not provide a specific function to calculate the average value, I cannot complete this step for you. However, I can give you the general formula:

Average value = (1/V) * ∫∫∫_R f(x, y, z) dV

Here, R represents the region (the cube), f(x, y, z) is the function you want to find the average value of, and V is the volume of the region (64 in this case).

Please provide the specific function you want to find the average value of, and I can help you further.

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Therefore, the probability that Polly selects a lemon jelly bean on the first draw is 1/5 or 0.2 (expressed as a decimal).

If the bag contains orange, lime, cherry, lemon, and grape jelly beans, and we assume that each jelly bean has an equal probability of being selected, then the probability of selecting a lemon jelly bean is:

number of lemon jelly beans / total number of jelly beans

Since we don't know how many jelly beans are in the bag, we can express this as a fraction:

number of lemon jelly beans / total number of jelly beans = ? / ?

However, we do know that there are five different flavors of jelly beans in the bag. Therefore, the total number of jelly beans in the bag must be a multiple of 5. Let's assume that there are 20 jelly beans in the bag, with 4 jelly beans of each flavor.

In this case, the probability of selecting a lemon jelly bean on the first draw is:

number of lemon jelly beans / total number of jelly beans = 4 / 20

= 1/5

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Complete question:

Polly and Percy were sharing a bag of jelly beans. the bag contained orange, lime, cherry, lemon and grape. if polly closes her eyes and pulls out the first jelly bean, what is the probability that the jelly bean is lemon?

Each edge of the original cube is of length x cm. The diagonal A F has length 20 cm the value of x is 20√2 cm.

Let's label the points in the diagram as follows:

- A, B, C, D are the vertices of the original cube.

- E is the midpoint of the edge BC.

- F is the point where the plane cuts the cube, which is the midpoint of the diagonal AD.

First, let's find the length of the edge EF using the Pythagorean theorem. We know that A F = 20 cm and AE = EF/2, so:

EF² = 2×AE²   (by Pythagoras theorem in triangle AEF)

EF² = 2×(A F/2)²

EF² = A F²/2

EF = √(A F²/2)

EF = 10√2 cm

Next, let's find the length of the diagonal AC using the Pythagorean theorem in triangle AEC. We know that AE = EF/2 = 5√2 cm and EC = x cm, so:

AC² = AE² + EC²

AC² = (5√2)² + x²

AC² = 50 + x²

AC = √(50 + x²) cm

Finally, let's find the length of the diagonal AD using the Pythagorean theorem in triangle AFD. We know that A F = 20 cm and FD = x/2 cm (since F is the midpoint of AD), so:

AD² = AF² + FD²

AD² = 20² + (x/2)²

AD² = 400 + x²/4

AD = √(400 + x²/4) cm

Since AD is a diagonal of the original cube, we know that AD = x√3 cm. Therefore:

x√3 = √(400 + x²/4)

x² × 3 = 400 + x²/4

3x² = 1600 + x²

2x² = 1600

x² = 800

x = √800 = 20√2 cm

Therefore, the value of x is 20√2 cm.

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The standard equation of the sphere is: x^2 + 12x + y^2 + z^2 = 36.

Since the sphere is tangent to the yz-plane, the x-coordinate of the center (-6,0,0) is equal to the radius of the sphere. Let r be the radius, then we have:

r = 6

The equation of a sphere with center (h, k, l) and radius r is given by:

(x - h)^2 + (y - k)^2 + (z - l)^2 = r^2

Substituting the values of the center and radius, we get:

(x + 6)^2 + y^2 + z^2 = 36

Expanding and rearranging the terms, we obtain the standard form of the equation:

x^2 + 12x + y^2 + z^2 = 0

So, the standard equation of the sphere is:

x^2 + 12x + y^2 + z^2 = 36

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The area of the huge pizza will be 225 times grater compared to the usual large pizza shown here

To find the area of the large pizza, we need to use the formula for the area of a circle: A = πr². The radius of the large pizza is given as 8 inches, so the area of the large pizza is:

A = π(8)² = 64π

To find the area of the huge pizza, we can use the fact that its dimensions are 15 times larger than the dimensions of the large pizza. Since the area of a circle is proportional to the square of its radius, we know that the area of the huge pizza will be 15² = 225 times larger than the area of the large pizza. Therefore, the area of the huge pizza will be:

A_huge = 225(64π) = 14400π

To find the ratio of the area of the huge pizza to the area of the large pizza, we can divide the area of the huge pizza by the area of the large pizza:

A_huge/A = (14400π)/(64π) = 225

Therefore, the area of the huge pizza will be 225 times greater than the area of the usual large pizza shown.

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Using synthetic division to perform the division x^3 + 4x^2 + 8x + 5 / x + 1, the answer is x^2 + 3x + 5.

To use synthetic division to perform the division of x^3 + 4x^2 + 8x + 5 / x + 1, we first set up the division in the following way:

-1 | 1 4 8 5

We then bring down the first coefficient (1) and multiply it by the divisor (-1) to get -1. We add -1 to the second coefficient (4) to get 3, and repeat the process until we reach the end of the coefficients:

-1 | 1 4 8 5
  -1 -3 -5
  -----------
   1 3 5 0

The resulting coefficients, from left to right, are 1, 3, 5, 0. This means that the quotient is x^2 + 3x + 5, and the remainder is 0. Therefore, we can write the original division as:

x^3 + 4x^2 + 8x + 5 = (x + 1)(x^2 + 3x + 5) + 0

So the answer is x^2 + 3x + 5.

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A. Since the students may or may not be allowed to have multiple majors, it is not known if the outcomes are mutually exclusive. If it is assumed that the majors are not mutually exclusive, then the probability that a student is either a finance or a marketing major cannot be found using only the information given. If it is assumed that the majors are mutually exclusive, then the probability is (Round to two decimal places as needed.)

To find the probability, first determine the total number of students in the MBA class by adding the number of students in each specialization:

Total students = 81 (Finance) + 39 (Marketing) + 67 (Operations and Supply Chain Management) + 53 (Information Systems) = 240

Assuming that the finance and marketing specializations are mutually exclusive, meaning students can only major in one of them, you can calculate the probability that a student is either a finance or a marketing major as follows:

P(Finance or Marketing) = (Number of Finance students + Number of Marketing students) / Total students
P(Finance or Marketing) = (81 + 39) / 240
P(Finance or Marketing) = 120 / 240
P(Finance or Marketing) = 0.5

The probability that a student is either a finance or a marketing major, assuming the majors are mutually exclusive, is 0.50 (rounded to two decimal places).

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Answer:

AB = √(20^2 + 21^2) = √841 = 29

sin A = 21/29, cos A = 20/29, tan A = 21/20

Evaluating and reducing the fraction expression -12/16 + 11/12 gives a value of 1/6

From the question, we have the following parameters that can be used in our computation:

-12/16 + 11/12

Take LCM and evaluate

So, we have

(-12 * 3 + 11 * 4)/48

Evaluate the products

This gives

(-36 + 44)/48

Evaluate the sum of the expression

So, we have the following representation

8/48

Simplify

1/6

Hence, the solution is 1/6

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This problem can be solved using dynamic programming. We can define dp[i] as the number of ways to achieve a weight of i using weights from 1 to k, inclusive. Then, we can compute dp[i] using the recurrence relation:

dp[i] = dp[i-1] + dp[i-2] + ... + dp[i-k]

This is because we can add a weight of j (1 ≤ j ≤ k) to a box that weighs i-j, to obtain a box that weighs i. We can start with dp[0] = 1 (the empty box weighs 0) and dp[i] = 0 for i < 0. Finally, the answer is dp[total].

Here is the Python code to implement the above approach:

def count_ways(total, k):

   dp = [0] * (total + 1)

   dp[0] = 1

   for i in range(1, total + 1):

       for j in range(1, k + 1):

           if i >= j:

               dp[i] += dp[i-j]

   return dp[total]

We can call this function with the desired total weight and the maximum weight k to get the number of possible ways to achieve the total weight using weights from 1 to k, inclusive.

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The value of x is the vertex of an angle with angles measuring 120 degrees and 240 degrees.

To solve this problem, we need to use the fact that the sum of the angles around a point is 360 degrees. This means that the angles formed by the two lines at the point of intersection add up to 360 degrees.

Let's call the two angles A and B. Then we can set up the following equation:

A + B = 360

Now, we need to use some information about the angle with vertex x to solve for one of the angles. Depending on the information given in the problem, we may need to use additional equations.

If we are given that one of the angles is twice the size of the other angle, we can write:

A = 2B

Now we can substitute this into our equation:

2B + B = 360

Simplifying, we get:

3B = 360

Dividing both sides by 3, we get:

B = 120

Now that we know the value of one of the angles, we can use our equation to find the value of the other angle:

A + 120 = 360

Subtracting 120 from both sides, we get:

A = 240

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Complete Question:

Two lines meet at a point that is also the vertex of an angle. Set up and solve an equation to find the value of x. Explain why your answer is reasonable.

The correct answer is A. Since A is invertible, the equation Ax = b has a unique solution for each b in R^n. This means that every vector in R^n can be expressed as a linear combination of the columns of A, Since we can solve for x in Ax = b.

Therefore, the columns of A span R^n. In other words, the columns of A form a basis for R^n, and any vector in R^n can be expressed as a linear combination of these basis vectors. This is a fundamental property of invertible matrices and is important in many areas of mathematics and engineering. The other answer choices are not correct, as they do not provide a valid explanation for why the columns of an invertible matrix span R^n.

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To obtain a confidence level of 99% and a margin of error of 2 percentage points, we need to survey at least 9,964 adults now.

We can use the formula for sample size calculation for a proportion:

n = [Z² × p × (1-p)] / E²

where:

n = sample size

Z = the z-score corresponding to the desired confidence level

p = the estimated proportion from the previous survey (3.69% = 0.0369)

E = the desired margin of error (2 percentage points = 0.02)

Substituting the values given in the problem, we get:

n = [Z² × p × (1-p)] / E²

n = [(2.58)² × 0.0369 × (1-0.0369)] / (0.02)²

n ≈ 9,964

Therefore, to obtain a confidence level of 99% and a margin of error of 2 percentage points, we need to survey at least 9,964 adults now.

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The solution for x is x ∈ (-∞, 11] ∪ (9, ∞)

We are given that;

The inequality  − 36 < − 3− 9 or −36<−3x−9or − 42 ≥ − 3 − 9 −42≥−3x−9

Now,

You can solve this inequality by first adding 9 to both sides of each inequality to get:

-27 < -3x or -33 >= -3x

Then, divide both sides of each inequality by -3, remembering to reverse the inequality symbol when dividing by a negative number:

9 > x or 11 <= x

Therefore, by inequality the answer will be x ∈ (-∞, 11] ∪ (9, ∞).

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The city of Denver wants you to help build a dog park. The design of the park is a rectangle with two semicircular ends.Therefore, you should order 5981.74 square feet of grass to cover the entire dog park.

To calculate the amount of grass needed for the dog park, you need to first find the area of the rectangle and the two semicircles. Then, add them all together to get the total area of the park.

The formula for the area of a rectangle is: length x width Let's say the length of the rectangle is 100 feet and the width is 50 feet. Area of rectangle = 100 x 50 = 5000 square feet The formula for the area of a semicircle is: (π x radius^2) / 2

Let's say the radius of each semicircle is 25 feet. Area of each semicircle = (π x 25^2) / 2 = 490.87 square feet (rounded to two decimal places) Total area of both semicircles = 2 x 490.87 = 981.74 square feet (rounded to two decimal places) .

Now, add the area of the rectangle and the two semicircles together: Total area of dog park = 5000 + 981.74 = 5981.74 square feet (rounded to two decimal places)

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