PLEASE HELP Triangle △A'B'C' is the image of △ABC under a dilation with a scale factor of 2. (graph below)

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?

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

If the scale factor between two circles is 2x/5y what is the ratio of their areas?