The Appalachian Trail is about 2,175 miles long. If Katia averages 18 miles each day, how long will it take her to hike the length of the trail?

(hurry! ) which expression is equivalent to the following complex fraction?

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

The random variable x is defined as the number marking the sector in which the arrow lands when the spinner in the diagram is spun once.