a car moves from rest. the graph gives information about the speed, v metres per second, of the car t seconds after it starts to move. work out the distance a car travels in the first 40 seconds of it's journey use 4 strips of equal width

Acircular city park has a sidewalk directly through the middle that is 111 - feet long. if each bag of fertilizer covers 50 square feet, then determine how many bags of fertilizers the parks and recreation department needs to use to cover the circular park. ignore all the sidewalks around and through the park.

Which expression is equivalent to7_/x^2 ÷ 5_/y^3? assume y# 0

The size of a certain cell is 2.5*10^-9m. another cell is 1.5*10^3 times larger. how large is the larger cell in scientific notation?