If anyone messes with me again on this question i will report to admin i wasted 300 points and now is going to be 400 points so dont troll!!

How to write 3 tenths and 5 tenths as a decimal

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

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