A water tank can be filled by an inlet pipe in six hours it takes two times as long for the outlet pipe to empty the tank how long will it take to fill the tank if both pipes are open

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 expression is equivalent to 42x-56y

Write the function for the graph. (1.8) (0,4)