It has been established that student’s final grade in a course decrease by 5 points for every 2 days absent from class . If a student misses 4 days , by how many points will the students final grade decrease?

Determine the relationship of ab and cd given the following points

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 number completes the inequality? 2/3 < _ < 7/9