Sophia is designing a Ferris Wheel for a theme park competition. She is given the degree measure of one interior angle and uses it to create one isosceles triangle. She then decides that using rigid motion to replicate the isosceles triangle around the center is the best option. Her Ferris Wheel will be a decagon where the interior angles total 1440° With this information, Sophia finds out that the base angles of each triangle would be
Select one
each and the central angle would need to be

Twenty-five percent of the customers entering a grocery store between 5 p.m. and 7 p.m. use an express checkout. consider five randomly selected customers, and let x denote the number among the five who use the express checkout.

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

A. 90 degrees b. 45 degrees c. 30 degrees d. 120 degrees