The map of a biking trail is drawn on a coordinate grid. the trail starts at p(−3, 2) and goes to q(1, 2). it continues from q to r(1, −1) and then to s(8, −1). what is the total length (in units) of the biking trail? 20 points and first right answer gets brainliest and 5 stars                            

John bought 2 horses at rs 20000 each

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

What is an alternate exterior angle