21.
22
18. the outside circle is dilated to the inside circle.
the circle is getting
- and the scale factor is
a. smaller;
c. bigger; 2
b. bigger;
d. smaller; 2

Each equation given below describes a parabola. which statement best compares their graphs? x = 2y^2 x = 8y^2

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

Create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1.