The diameter of a small gear is 16 cm. this is 2.5 cm more than 1/4 of the diameter of a larger gear. what is the diameter of the larger gear? (round to the nearest centimeter)

Which expression gives the area of the triangle shown below

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

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