Miguel and maria are washing the windows in their home. together, they can complete the task in 1 hours. if maria can wash windows twice as fast as miguel, how many minutes would it take her to wash them by herself? in your answer, include the equation you used to solve the problem.

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 25% of y is 30, what is 60% of y?

What is the area of a triangle with vertices at (-3 3) (-3,2) and (1,2)?