simplifying radicals pt.3 please help ASAP and explain if possible

The type of sampling described, where the researchers intentionally select a sample with 50% straight and 50% LGBTQ+ respondents, is known as "disproportionate stratified sampling."

A. Disproportionate stratified sampling involves dividing the population into different groups (strata) based on certain characteristics and then intentionally selecting a different proportion of individuals from each group. In this case, the researchers are dividing the population based on sexual orientation (straight and LGBTQ+) and selecting an equal proportion from each group.

B. Availability sampling (also known as convenience sampling) refers to selecting individuals who are readily available or convenient for the researcher. This type of sampling does not guarantee representative or unbiased results and may introduce bias into the study.

C. Snowball sampling involves starting with a small number of participants who meet certain criteria and then asking them to refer other potential participants who also meet the criteria. This sampling method is often used when the target population is difficult to reach or identify, such as in hidden or marginalized communities.

D. Simple random sampling involves randomly selecting individuals from the population without any specific stratification or deliberate imbalance. Each individual in the population has an equal chance of being selected.

Given the description provided, the sampling method of intentionally selecting 50% straight and 50% LGBTQ+ respondents represents disproportionate stratified sampling.

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Answer:

Part A:

Variable x = change in profit per month

8x = 7200

Part B:

$900 loss per month

Step-by-step explanation:

Part A:

Within 8 months, the company loses $7200. To show a change in profit per month we have to multiply change by 8 months to equal $7200. Since we do not know what the change per month is, we can represent it as a variable. In this case, I will use x.

Variable x = change in profit per month

8x = 7200

Part B:

Solve for the expression we created in part A

8x = 7200

Isolate the variable x by dividing both sides by 8

8x ÷ 8 = 7200 ÷ 8

x = 900

$900 loss per month

Answer:

True!

Step-by-step explanation:

Answer:

41 degrees

Step-by-step explanation:

82/2 = 41

9514 1404 393

Answer:

  B.  39°, 106°, 43°

Step-by-step explanation:

The sum of angle measures in a triangle is 180°. Then the sum of angle expressions will be 180.

  (3x +1) +(11x -4) +(5x -7) = 180

  19x -10 = 180 . . . . . collect terms

  19x = 190 . . . . . . . . add 10

  x = 10 . . . . . . . . . . . divide by 19

__

Then the three angle measures are ...

The appropriate choice is ...

  B.  31°, 106°, 43°

Answer:

380cm

Step-by-step explanation:

Answer:

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Step-by-step explanation:

Answer:

, so easy

Step-by-step explanation:

3×2.7mm=8.1mm

Answer:

8.1mm

Step-by-step explanation:

equilateral triangle all sides are equal.

If 1 side is 2.7mm what will be the total of three sides. 2.7+2.7+2.7=8.1mm

Both options C and D are correct in describing the meaning of the margin of error, but we cannot provide specific values for the margin of error without additional information.

To answer this question, first, we need to calculate the sample proportion of adults who smoke.
Calculate the sample proportion
Number of adults surveyed = 106,600
Percentage of adults who smoke = 18%
Sample proportion (p) = (Percentage of adults who smoke) / 100
p = 18% / 100 = 0.18
Now, let's address each option in part b:
A. The probability that any given adult surveyed from the population smokes is not the correct interpretation of the margin of error.
B. The probability that any given adult surveyed from the sample smokes is not the correct interpretation of the margin of error.
C. We are 90% confident that the observed proportion of adults that smoke is within the margin of error of the sample proportion.

To calculate the margin of error, we need more information, such as the standard deviation of the population and the desired confidence level.

Since we do not have this information, we cannot provide a specific value for the margin of error.
D. We are 90% confident that the observed proportion of adults that smoke is within the margin of error of the population proportion.

Similar to option C, we need more information to calculate the margin of error, so we cannot provide a specific value for the margin of error.

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x(x – 5) = 176 is the correct equation to find the greater integer.

As the question mentions, the greater integer is x. So, the smaller integer will be (x - 5). Also, we are informed that their product is 176.

Now, representing the given information as mathematical expression -

x(x – 5) = 176

On further multiplication on Left Hand Side, we get the equation -

x² - 5x = 176

Rewriting the equation -

x² - 5x - 176 = 0

Further solving the equation to validate it.

x² - 16x + 11x - 176 = 0

x (x - 16) + 11 (x - 16) = 0

(x - 16) (x + 11) = 0

x = 16, -11

As stated, the integers are positive. So, the value of x and hence greater integer is 16.

Value of small integer = 16 - 5

Value of small integer = 11

So, the two integers are 16 and 11. Their product is 176 hence, our formed equation is correct.

Therefore, the equation that can be used to find x is : x(x – 5) = 176.

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The complete question is -

Two positive integers have a product of 176. One integer is 5 less than the other integer. Which equation can be used to find the value of x, the greater integer?

x² + 5 = 176

x(x + 5) = 176

x(x – 5) = 176

x² – 5 = 176

AnsThe given graph represents a function, and we need to evaluate the value of f(2) from the given graph. To do this, we need to find the point where the graph intersects the vertical line x=2.

From the graph, we can see that the point (2, 9) lies on the graph of the function. Therefore, f(2) = 9.

Hence, the value of f(2) from the given graph is 9.

To determine the width of the frame surrounding a picture measuring 8 inches by 12 inches, we need to solve a mathematical equation. Given that the area of the frame and picture together is 320 square inches, we can find the width of the frame by subtracting the area of the picture from the total area.

Let's assume the width of the frame to be x inches. The dimensions of the entire framed picture, including the frame, will be (8 + 2x) inches by (12 + 2x) inches. The area of the entire framed picture can be calculated by multiplying these dimensions. Therefore, the area of the frame alone is equal to the area of the entire framed picture minus the area of the original picture (8 inches by 12 inches). We have the equation (8 + 2x)(12 + 2x) - (8)(12) = 320. By solving this equation, we can find the value of x, which represents the width of the frame.

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Answer:

PUT YOUR HANDS UP AND GIVE ME YOUR POINTS!!!

Step-by-step explanation:

hehe

Answer:

the answer is 32

Step-by-step explanation:

just because it is

In order to estimate the proportion of the population that supports the U.S. president's current policy on health care system revisions, a sample size calculation needs to be conducted.

The president desires a margin of error of 0.02 and a 99% level of confidence. This calculation involves determining the necessary sample size based on the population size, estimated proportion, and desired level of confidence. Once the appropriate sample size is determined, a random sample of individuals can be selected to gather their opinions on the health care policy, allowing for a reliable estimation of the proportion of the population that supports it.

To estimate the proportion of the population supporting the president's health care policy, we need to calculate the required sample size. The formula for sample size calculation is:

n = (Z^2 * p * q) / E^2

Where:

- n is the required sample size.

- Z is the Z-score corresponding to the desired level of confidence. For a 99% level of confidence, the Z-score is approximately 2.576.

- p is the estimated proportion of the population supporting the policy. Since we don't have an initial estimate, we can assume p = 0.5, which provides the maximum sample size required.

- q is 1 - p.

- E is the margin of error, which is 0.02 in this case.

Substituting the values into the formula, we get:

n = (2.576^2 * 0.5 * 0.5) / 0.02^2 ≈ 6653.44

Since the calculated sample size is a decimal, we round it up to the nearest whole number, giving us a required sample size of approximately 6654 individuals. By randomly selecting this number of individuals from the population and surveying their opinions on the health care policy, the president can estimate the proportion of the population supporting the policy with a margin of error of 0.02 and a 99% level of confidence.

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Answer:

Two real world situations are shown below.

Step-by-step explanation:

Initial population of a certain bacteria is 1 thousand and the population doubles in each hour. So, population of bacteria (in thousands) after x hours is

\(f(x)=1(2)^x\)

\(f(x)=(2)^x\)

A person invests 1 lakh rupees in shares and the amount is twice at the end of each year. So, total amount (in lakhs) after x years is

\(f(x)=1(2)^x\)

\(f(x)=(2)^x\)

Answer:

area = 2,338.2cm^2

Step-by-step explanation:

There is a simple formula for finding the area of a regular hexagon via its side length, but I'm assuming your teacher would like it geometrically considering you asked me to draw it out!

See attached image.

Find the height of the shaded triangle using the Pythagorean theorem:

15^2 + h^2 = 30^3

225 + h^2 = 900

h^2 = 675

h = ~25.98 cm

Find the area of the shaded triangle using 1/2bh:

1/2(15)(25.98) = 194.85

There are 12 such triangles in the hexagon.

12(194.85) = 2,338.2

Answer:

4 in

Step-by-step explanation:

bac=6in2 3*2=6 then 2*2=4in2

Answer:

B. False

Pont (2, -3) lies on the fourth quadrant.

Step-by-step explanation:

You're welcome.

The statement that is true about the number of hours of daylight is: "the number of hours of daylight varies depending on the latitude of the observer."

Hence, option (a) is the correct choice.

Day length will be roughly 12 hours at latitude 0° (the Equator). The Equator region has a steady 12 hour day light all year.

Day duration can be observed to extend to 24 hours or reduce to zero if latitude increases to 80° (polar circles - north or south) (depending on time of year).

The quantity of daylight received by an observer is determined by their latitude and the season.

The number of hours of daylight changes the greatest near the equator, whereas it varies the least towards higher latitudes.

The number of daylight hours covers the hours between dawn and twilight as well as the hours from sunrise to sunset.

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Answer:

m∠XBC = 135

Step-by-step explanation:

What is the measure of ∠XBC?

m∠XBC = m∠BAC + m∠BCA

3p – 6 = p + 4 + 84

3p – 6 = p + 88

2p – 6 = 88

2p = 94

From the simplified expression, we need to find the value of p first

From the last line we can see that;

2p =94

Divide both sides by 2:

2p/2 =94/2

p = 47

From the expression, m∠XBC =3p-6

m∠XBC = 3(47)-6

m∠XBC = 141 -6

m∠XBC = 135

Hence the measure of m∠XBC is 135

Answer:

B

Step-by-step explanation:

f=120p

f=120(16)

f= 1920

y = -2x - 9 ----------- 1

y = 3x + 1 -------------- 2

Step 1

Substitute y from equation 1 to equation 2.

y = -2x - 9

3x + 1 = -2x - 9

Step 2

Collect like terms

3x + 2x = - 9 - 1

5x = -10

Step 3

Divide through by 5

x = -10/5

x = -2

Step 4

Substitute x in equation 2 to find y.

y = 3x + 1

y = 3(-2) + 1

y = -6 + 1

y = -5

So the solution is (-2, -5)

Answer:

chicken and chicken

Step-by-step explanation:

just took the test

Answer:don’t worry u not dum and also im sorry that’s not a function.

Step-by-step explanation:

Give me brainliest!

Answer:

B

Step-by-step explanation:

Answer:

the answer is a i did the quiz

Step-by-step explanation:

Answer:

16

Explanation:

The segment with a length equal to 12 is tangent to the circle, It means that it forms an angle of 90 degrees with the line of the missing length.

So, the formed triangle is a right triangle and we can apply the Pythagorean theorem to solve the question.

Then, since 20 is the hypotenuse of the triangle, we get that the missing side can be calculated as:

So, solving the expression, we get:

Therefore, the segment length is 16.

Answer:

t-5=12

Step-by-step explanation:

Answer:

T_n = -5 -2(n-1) = -3 - 2n

Step-by-step explanation:

This is an arithmetic sequence with a common difference of -2 (-5 -2 = -7, -7 - 2 = -9, -9 -2 = -11 ...)

so, T_n = -5 -2(n-1) = -3 -2n

we use -5 as the starting point because that's the first term. whether you simplify or not depends on you and your teacher.

The interior angle of a parallelogram is proportional to the measure of another angle with a ratio of 0.25:1.

A parallelogram is a four-sided flat shape that has opposite sides that are parallel and equal in length. The sum of the interior angles of a parallelogram is equal to 360 degrees. If the measure of one interior angle is 0.25 times the measure of another angle, this means that there is a proportionate relationship between the two angles. To find the measure of the second angle, we can use the formula:

Angle 2 = (Angle 1) / 0.25

For example, if Angle 1 is 100 degrees, then Angle 2 is 100 / 0.25 = 400 degrees. This means that if one angle measures 100 degrees, the other angle measures 400 degrees. The sum of the two angles is 500 degrees, which is still less than the total sum of interior angles in a parallelogram, which is 360 degrees.

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