What is the approximate area, in square units, or circle C

A: 113

B: 452

C: 38

D:19

Answer: Cluster Sampling

Step-by-step explanation: I just took this test and got it correct :)

If the researchers choose three freshmen seminar classes at random and poll every pupil in those classes. The Cluster Sampling method was applied. Option A is correct.

In the probability sampling technique known as cluster sampling, you split a population into groups, such as districts or schools, and then randomly choose a sample from among these groups. Ideally, each cluster should be a small representation of the population as a whole.

When studying large, dispersed populations, cluster sampling is most effective since interviewing every individual would be expensive, time-consuming, and sometimes impossible.

By using cluster sampling, it is possible to create smaller, more comparable clusters that represent the population being studied.

Thus, the researchers choose three freshmen seminar classes at random and polled every pupil in those classes. The Cluster Sampling method was applied. Option A is correct.

Learn more about cluster sampling here,

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Answer:

123

Step-by-step explanation:

I =(6)(2)-10

I=12+-10

I=(12+-10)

I=2

2 is the final answer

Answer:

13

Step-by-step explanation:

mark brainliest

Answer:

A. The mean price was about 15,000 higher than the median price.

Step-by-step explanation:

Answer:

G = 50

H = 80

I = 50

Step-by-step explanation:

Angle in a triangle is equal to 180. This means that we will equal all the angles to 180

2x + 2x + 4x-20 = 180

8x - 20 = 180

8x = 180 + 20

8x = 200

x = 200 / 8

x = 25

G = 2 * 25 = 50

I = 2 * 25 = 50

H = 4 * 25 - 20

H = 100 - 20 = 80

Answer:

31 pages

Step-by-step explanation:

I hope this helps!!!

Answer:

31 take the pages and divide by the days

Step-by-step explanation:

93÷3

3 goes into 9 3 times

3 goes into 3 1 time

Answer:

A

Step-by-step explanation:

when plotted this is 20,0

Answer:

she can buy 9 shirts

Step-by-step explanation:

80-35=45

45÷5=9

plz mark brainlyest

Answer:

Approximately 460 ft

Step-by-step explanation:

In any question where we have:

And we're asked to find:

We're gonna be using some trigonometry. The first question we've gotta ask is what we're looking for, and how the angles and sides relate to that. We're given:

And we're looking for:

How do our sides relate to the angle? Well, the 400 ft side is adjacent to 49°, and the side h is opposite. From SOH-CAH-TOA, we can see that the last trig function, tangent, is equal to opposite/adjacent. Let's turn this into an equation to bring it all together:

[tex]\tan{49^\circ}=h/400[/tex]

Solving for h, we find that

[tex]h=400\tan{49^\circ}\approx400(1.15)=460[/tex]

So the heigh of the hill is approximately 460 ft.

Answer:

C) 2,2,2.82842712

Step-by-step explanation:

Answer:

B and C

Step-by-step explanation:

Side lengths of 4, 8, and 12 do not form a right triangle. According to the Pythagorean Theorem, a² + b² = c². In this theorem, "c²" represents the largest side (c) squared

Answer:

z = -11

Step-by-step explanation:

-5Z = 55

to find z, divide each side by -5

[tex]\frac{-5Z}{-5} = \frac{55}{-5}[/tex]

z = -11

Answer:

Z = -11

Step-by-step explanation:

When dealing with variables, you want to get it alone so it instantly equals the number.

Since Z is being multiplied by -5, you're going to divide -5 because that's the opposite of multiplying--but you have to do it on both sides, not just the one.

Note that when you're dividing or multiplying a negative and positive number, the result with ALWAYS be negative!

                                                 -5Z = 55

                                                  /-5     /-5

                                                   Z =  -11

Just in case, we'll plug in -11 for Z and see if it works.

                                               -5(-11) = 55

Note again that when you're multiplying two negatives it cancels out the negative and makes the answer positive!

Hope this helped :)

Answer: 3 and 2

Step-by-step explanation:

Answer:

1 hour 42 minutes approx

Step-by-step explanation:

Given data

Mayas work rate= 1/4 room per hour

Reginald work rate= 1/3 room per hour

Let the total time taken for both of them be T

Hence their combined work rate

1/4+1/3= 1/T

3+4/12=1/T

7/12=1/T

T= 12/7

T= 1.7 hours

Hence it will take them 1 hour 42 minutes approx

Answer: 0

Step-by-step explanation:

Simply the answer is 0 because anything multiplied by 0 will result in 0

4x(0) = 0

Answer: 40

Step-by-step explanation:

because I just had that on my math test and got it wrong

The cost of each friendship bracelet in dollars and cents was J $7.75

Multiplication is the mathematical operation that is used to determine the product of two or more numbers. If an event can occur in m different ways and if following it, a second event can occur in n different ways, then the two events in succession can occur in m × n different ways.

We are given that Abigail paid $62.00 for 8 friendship bracelets. Each bracelet cost an equal amount.

Cost of 8 friendship bracelets =  $62.00

Therefore,

Cost of 1 friendship bracelets =  $62.00/ 8

Cost of 1 friendship bracelets =  7.75

The cost of 1 friendship bracelets is $7.75

Learn more about multiplications;

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Answer:

Cereal A is cheaper by $0.15

Step-by-step explanation:

Cost of a 10-ounce box of Cereal A = $2.70

So,

Cost of a 1-ounce box of Cereal A = [tex]\frac{2.70}{10}=\$0.27[/tex]

Cost of a 15-ounce box of Cereal A = [tex]0.27(15)=\$4.05[/tex]

Also,

Cost of a 13-ounce box of Cereal B = $3.64

So,

Cost of a 1-ounce box of Cereal B = [tex]\frac{3.64}{13}=\$0.28[/tex]

Cost of a 15-ounce box of Cereal B = [tex]=0.28(15)=\$4.2[/tex]

Here,

Cost of a 15-ounce box of Cereal B - Cost of a 15-ounce box of Cereal A = [tex]4.2-4.05=\$0.15[/tex]

Therefore,

Cereal A is cheaper by $0.15

Answer:

A

Step-by-step explanation:

Fo sooo

Answer:

3 hours and 15 minutes

Step-by-step explanation:

Answer:

someone help

Step-by-step explanation:

The question is: how many boys are in the school

0:20

1: 25

2:30

3:35

4:40

5:45

6:50

7:65

8:70

9:75

10: 80

hope this helps

Answer:

2

Step-by-step explanation:

beacuse there are 13 pizzas left and they need 2 more

plz dont get mad if i get it wrong

Answer:

A

Step-by-step explanation:

Ur welcome