4. Simpl 1. Amplifica fractiile date.
3.15 14 23 3
19' 4'15'45 25 9' 5' 1' 15' 7
31 24 27, 29,72
cu 5: 1217,31729
5 25 20' 51' 34 3'420'8' 7
ile echivalente cu care au​

What is best way to getting answer for my exam is

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 set does not contain -3 the set of all real numbers the set of all integers the set of all whole numbers the set of all rational numbers