Which of the following represents the value of the series below? s28 - (94-4) r=1 s20 = 28(5+24 o $28 - (9(28)-4)+(9(1)-4) s28 = 28(5+248) s28 = 28248-5)

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

Find the area of a parallelogram with base 15 yards and height 21 2/3

What is the absolute value of the complex number -4-sqrt2i