Evaluate the expression when b = 0.4.200b2−0.6÷bEnter your answer as a decimal in the box.

Evaluate 4 a for a = 5 2/3 . express your answer in simplest form.

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

What is the reflection image of (5,-3) across the line y = -x?