The volume of air inside a rubber ball with radius r can be found using the function v(r) = four-thirds pi r cubed. what does v and five-sevenths represent?

1-for what value of x is line a parallel to line b 2-for what value of x is line a parallel to line b

To solve the system of equations below, grace isolated the variable y in the first equation and then substituted into the second equation. what was the resulting equation? 3y=12x x^2/4+y^2/9=1

What are the coordinates of the point that is 1/3 of the way from a to b? a (2,-3) b (2,6)