EF is the midsegment in isosceles trapezoid ABCD. If the length of CD is 4 more than twice the length of BA, and FE = 12.5, what is the length of BA?

7x+8y=-18, 4x-9y=-3 solve the system of equations

Atoy company is considering a cube or sphere-shaped container for packaging a new product. the height of the cube would equal the diameter of the sphere . compare the volume to surface area ratios of the containers. which packaging will be more efficient? for a sphere, sa =4πr²

Simplify.7x + 3y - 2 + 6x + 1 + y squared 2 you! ; )