(4x^-4y^6z)^2/8x^2y^3z^2

Which statement most accurately describe why the division property of exponents does not apply to the expression (-8)^2/(-3)^4

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

Acircle has a circumference of 28.36 units what is the diameter of the circle