Usain bolt set a world record for 100m sprint in 9.58 seconds. convert this time in seconds into a decimal fraction of an hour.

The graph below shows the amount of money left in the school’s desk fund, f, after d desks have been purchased. for each new desk that is purchased, by how much does the amount of money left in the school’s desk fund decrease?

What is the rotational symmetry of a wheel

Asquare parking lot has 6,400 square meters what is the length in meters