Atest is worth 60 points. multiple- choice questions are worth 2 points, and short answer questions are worth 5 points. if the test has 15 questions, how many multiple-choice questions are there?

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

Ling listed all of the factors of a mystery number: 1,2,4,8,16,32 what is the mystery number?

Find the value. a. 0.003 b. 0.03 c. 0.3 d. 3