james school is selling tickets to the annual dance competition. On the first day of ticket sales the school sold 9 senior citizen tickets and 8 child tickets for a total of $126. The school took in $96 on the 2nd day by selling 10 senior citizen tickets and 4child tickets. Find the price of a senior citizen ticket and child's ticket.

Abcd is a parallelogram. the diagram is not drawn to scale. if m

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

The figures below are made out of circles, semicircles, quarter circles, and a square. find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations).