One day, a person went to a horse racing area. Instead of counting the number of humans and horses, he counted 74 heads and 196 legs. How many humans and horses were there? A.
37 humans and 98 horses

B.
24 horses and 50 humans

C.
31 horses and 74 humans

D.
24 humans and 50 horses

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 always true when two whole numbers are subtracted?

What is the solution to this system of equations? y= 2x - 3.5 x - 2y = -14