Ican connect dividing by a fraction to multiplication

4 divided by 1/5

find 3 divided 1/10=

3 divided by 1/4=

2 divided by 1/2=

An astronaut drops a rock into a crater on the moon. the distance, d(t), in meters, the rock travels after t seconds can be modeled by the function d(t)0.82. what is the average speed, in meters per second, of the rock between 5 and 10 seconds after it was dropped?

Lucy is a dress maker. she sews \dfrac47 7 4 of a dress in \dfrac34 4 3 hour. lucy sews at a constant rate. at this rate, how many dresses does lucy sew in one hour? include fractions of dresses if applicable

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?