A truck is carrying 240 cubic feet of concrete. Each cubic
foot of concrete weighs 152
pounds. If the truck weighs
21.780 pounds when empty,
find the combined weight of
the truck and concrete.

Which of the following system of equation is not equal to the system of equations is not equal to the system of equations shown below

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

Student price tickets to a movie are $1 and non student tickets are $2 . 350 tickets are sold and the total amount made is $450. there were 250 student tickets sold . true or false .