At a certain school 6/7
of the students are girls. Today, 2/5
girls brought their lunch. What fraction of the students are girls who brought their lunch today?
Write your answer in simplest form.

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)

Which geometric principle is used to justify the construction below?

Apyramid fits exactly inside a cube. the cube and the pyramid share the same square base, and they are both exactly the same height. the volume of the cube is 66 cubic inches. what is the volume of the pyramid? explain your answer. answer asap