Damon does the following math problem: 4 x 7 x 1/4 4 x 1/4 x 7 1 x 7 7 Damon has used all of the following number properties except . distributive property multiplicative identity multiplicative inverse commutative property of multiplication

Need this asap if anyone can i would be very grateful. if you could show workings that would really

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

For the following geometric sequence, find the recursive formula. {-80, 20, -5, } i need : ')