5. If 270° < theta < 360° and cos theta = 11/15, find cos 2 theta

What is the number 321,000,000 in scientific notation? also what is the number? ?

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.

Why is studying fractions important