An artist plans to paint a picture. he wants to use a canvas that is similar to a 4 in. y’all by 6in. wide photograph. if the longer horizontal sides of the canvas are 20 in . wide , how high should the canvas be? give your best answer a fraction in simplest form.

What is the inverse of the function f(x)=2x+1

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

Using only the digits 5, 6, 7, 8, how many different three digit numbers can be formed if no digit is repeated in a number?