MATHEMATICS MIDDLE SCHOOL

What is the approximate perimeter of a semicircle with a radius of 9mm? Use pi as 3.14.
Express your final answer to the nearest hundredth.

Answers

Answer 1
Answer: Act like it's a whole circle and find the perimeter, then divide by 2.

P = 2 * pi * r

P = 2 * 3.14 * 9

P = 56.52

Now divide by 2:

P = 28.26
Answer 2
Answer:

Answer:

I took the test and the answer is 46.26.

Step-by-step explanation:

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Answers

If Mike's garden is pentagonal, that means it has 5 sides. Each side is 8 feet, so the perimeter of Mike's garden is:

8+8+8+8+8=40 ft

To find the perimeter of his neighbor's garden, we can multiply this by the scale factor:

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Tyler knows that the ratio of male to female horses on the farm is 2 to 3. If there are 12 male horses, how many female horses are there? 20 POINTS

Answers

Answer:

18 female horses.

Step-by-step explanation:

By proportion  2 : 3 = 12 : x   where x is the number of female horses.

12 / 2 = x / 3

2x = 3*12 = 36

x = 18.

last month Stephanie spent $57 on 4 allergy shots and 1 office visit .This month she spent $9 after 1 office visit and a refund for 2 allergy shots from her insurance company . How much does an office visit cost an allergy shot?

Answers

Visit $25 allergy shot $8

4a + 1v =57

-2a +1v= 9

I will multiply the second by -1 to cancel v variable (elimination method)

4a +1v =57

2a -1v = - 9

add both

6a. = 48

a= 8

4a= 32

32 + v = 57

v= 25

32+25 = 57

-16 +25=9

A study was designed to determine how test scores on a 20-question test were related to the time spent studying for the test. What are the independent and dependent variables for this study?  
A.The independent variable is time spent studying, and the dependent variable is the number of questions on the test.  
B.The independent variable is the score on the test, and the dependent variable is the number of questions on the test.  
C.The independent variable is time spent studying, and the dependent variable is the score on the test.  
D.The independent variable is the score on the test, and the dependent variable is time spent studying.

Answers

it would be d because the score you get on a test depends on how long you studied for.

Can y'all please help me I need to answer ALL OF THIS ASAP!

Answers

16. 8h = p 17. 288 = 18h, 16 = h. She is making $16/h, so if she works 11 hours making that same amount, 11(16) = p, she would make $176. 18. I’m not sure. 19. 24/60 = 0.4 x 100 = 40%. 20. I’m assuming you already solved it? 21. 30 x 0.63 = 18.9 22. 81 x 0.6 = 48.6 31. 40 x 0.55 = 22. Since the item is on sale for 55% this means the price decreased by $22, so 40 - 22 = 18, so Nicole payed $18. 32. 881.95 x 1.65 = $1455.22 33. 48300 x 1.38 = 66654 34. 442 x 1.35 = $596.7 35. 221/130 = 1.7 x 100 = 170 % This is all I’ll do for now, I’ll probably come back to do more if someone hasn’t by then, but I hope this helped. Just comment back on this if you have any further questions about the questions I answered :)

A park has an area of 125 Square miles and a width of 5 miles. What is the perimeter of the park

Answers

Answer:25 miles

Step-by-step explanation: Its 25 because if you divide 125 with 5 you get 25 miles very simple math you probably in 5th or 4th grade. Np btw
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