A crosswalk connects two sidewalks along the street below. If the sidewalk are parallel, what is the value of x? (Hint: Find the missing angle in the triangle, then use the other consecutive interior angle to solve for x)

Plz me plz i will give a brain just plz

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

This is so hard and it’s for a test