The roof of a building is in the shape of a hyperbola, y^2-x^2=38, where x and y are in meters. determine the height of the outside. the distance between the center of the hyperbola and the walls is 3m. a) -29.1
b) 47.3
c) 35.2
d) 6.9

Which is a reasonable estimate of the amount of water in a small, inflatable pool used by children?

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

Which expressions are equivalent to k/2 choose 2 answers: a k-2 b 2/k c 1/2k d k/2 e k+k