¿Qué expresión da como resultado un número racional? 1)
√ 118
2)
5.15
3)
Z + √2
4)
3 V2 + 2.13

Find x & pleeeeaaaassseeee me !

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

Negative 5 1/12 + negative 4 1/4 + 6 3/4