The volume of a cube is 512 cubic centimeters.
what is the area, in square centimeters, of each side of the cube?

a. none of these.
b. 32 cm^2
c. 64 cm^2
d. 8 cm^2

What is the value of x in the diagram below?

How to solve a simultaneous equation involved with fractions?

Four airplanes carrying a total of 400 passengersarrive at the detroit airport. the airplanes carry, respectively,50, 80, 110, and 160 passengers.a) one of the 400 passengers is selected uniformly at random.let x denote the number of passengers that were on theairplane carrying the randomly selected passenger. find var(x)for x as given in the problemb) one of the 4 airplane drivers is also selected uniformly atrandom. let y denote the number of passengers on the chosen driver’s airplane. find var(y) for y as given in the problem