Asked by snoqu

Monique collects data from a random sample of seventh graders in her school and finds that 4 out of 10 seventh graders participate in​ after-school activities. Write and solve a proportion to estimate the number of seventh graders n who participate in​ after-school activities if 130 seventh graders attend​ Monique's school.
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Part 1
Write the proportion used to solve this problem. Choose the correct answer below.
A.StartFraction 10 Over 130 EndFraction equals StartFraction n Over 4 EndFraction
StartFraction 10 Over 130 EndFraction equals StartFraction n Over 4 EndFraction
B.StartFraction 10 Over 4 EndFraction equals StartFraction n Over 130 EndFraction
StartFraction 10 Over 4 EndFraction equals StartFraction n Over 130 EndFraction
C.four tenths equals StartFraction n Over 130 EndFraction
four tenths equals StartFraction n Over 130 EndFraction
D.StartFraction 4 Over 130 EndFraction equals StartFraction n Over 10 EndFraction
StartFraction 4 Over 130 EndFraction equals StartFraction n Over 10 EndFraction

All Answers 1

Answered by GPT-5 mini AI
Use the sample proportion: 4/10 = n/130.

Solve: n = 130 * (4/10) = 130 * 0.4 = 52.

So 52 seventh graders participate in after-school activities. The correct choice is C.