Students in an environmental club are planning a garden with four rectangular plots of land separated by stone paths, as shown. the stone paths will have the same width.

a. the students plan to cover 80 square feet of path with stone. write and solve an equation to find the width of the paths. b. in part (a) you used one solution of an equation to find your answer. explain how you choose which solution to use.

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

How do you use the elimination method for this question? explain, because i really want to understand!

Agraph of a trapezoid can have diagonals with slopes that are negative reciprocals and two pairs of adjacent sides that are congruent, true or false, and why