Simplify and Determine the coefficient of:
Please help.

What is the value of the expression below? (81^2)^1/8

Find the area of the regular hexagon if a side is 20 cm.

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.