Sandy and chet live 840 miles apart. they start driving toward each other at the same time on the same road. sandy's constant rate is 45 mph and chet's constant rate is 60 mph. how many hours will it take them to meet? a) 6 b) 7 c) 8 d) 9

This stem-and-leaf plot represents the heights of the students on ralph's basketball team. one student's height is missing from the plot. if the mean height of all the students on the team is 61 inches, what is the missing height? a. 55 in. b. 59 in. c. 61 in. d. 65 in.

Use the quadratic formula to solve the equation. if necessary, round to the nearest hundredth. x^2 - 8 = -6x a. –7.12, 1.12 b. 7.12, –1.12 c. 7.12, 1.12 d. –7.12, –1.12

What is the total surface area of this square pyramid?