For which situations is it appropriate to use a sample? choose all that apply. what percentage of pick-up truck drivers want their next vehicle purchase to be another pick-up truck? should the speed limit be decreased on the highway connecting two large cities? how many pedestrians would use a walkway built over a busy road? how many police cars are equipped with computers? what is the most popular car color in the teachers’ parking lot?

What percentage of pick-up truck drivers want their next vehicle purchase to be another pick-up truck?

Should the speed limit be decreased on the highway connecting two large cities?

How many pedestrians would use a walkway built over a busy road?

Step-by-step explanation:

We use samples when using an entire population is not feasible.

It is not reasonable to ask every pick-up truck driver what they want their next purchase to be; there are too many owners of pick-up trucks.  This means we should use a sample.

Many people drive a highway that connects two large cities.  It is not reasonable to survey every person that drives it, so we should use a sample.

On a busy road, we may have many pedestrians; this means we should use a sample instead of the entire population.

the figures below are made out of circles, semicircles, quarter … find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations). remember that we'll also have to cut whatever areas we get in half, since we're only dealing im pretty sure that is the right answer

step-by-step explanation:

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6