Heather is building a ladder for her tree house you need 13 feet of lumber for each Dill in to feet of lumber for each rug on the ladder how many feet of lumber does she need for a ladder with two stilts in 12 rungs and I am timed

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

Henry is an avid reader, he devours 90 pages in half an hour how many pages has henry read per minute?

Suppose y varies directly with x. write a direct variation equation that relates x and y. then find the value of y when x=12 y=7 when x=3