3 years ago

Determine whether the situation calls for a survey, an observational study, or an experiment.

Mathematics

1 answer:

Svetradugi [14.3K]3 years ago

8 0

Answer:

B. $\displaystyle observational\:study$

Explanation:

Compare people who have lower comprehension intelligence quotients than others.

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The formula for the circumference of a circle is pi * r * 2

First we solve for r (the radius)
pi*r*2 = C
pi*r*2 = 18

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The diameter is about 5.732
(And you can round of course)

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A sporting goods store pays $180 for a rubber raft. The percent markup is 40%. What is the raft's selling price?

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