Explain how to regroup 43 ones as tens and ones

Aladder that is 30 ft long needs to reach 27 ft up a building. what should the angle of the vertical be?

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

Alex's monthly take home pay is $2,500. what is the maximum bad debt payment he can maintain without being in credit overload?