Is this triangle a right triangle? and is it a scalene, a isosceles, or a equilateral triangle? Thx.

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 the slope of the line that passes through the points (–9, 2) and (0, 4)? the slope of the line is

Find the center of the circle that can be circumscribed about efg with e(4,4) f(4,2) g(8,2)