49. A girl spent one-fifth of her cash on stamps and twice as much on postcards
and then had £1.00 left.
How much did she have to start with?

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 rate of change of a line that passes through (2,-5) and (6,-2)?

Justin has 750 more than eva and eva has 12 less than justin together they have a total of 63 how much money did