Using a directrix of y = 2 and a focus of (3, −4), what quadratic function is created?

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

Terri makes a quilt using three sizes of fabric squares the side lenght of each fabric square is the square root of the area

Factor the expression using the gcf. the expression 21m−49n factored using the gcf