7 2/7 equivalent fraction

Simplify (1/2)4th power a. (1/16) b.(1/8) c.(1/4)

Acomputer store buys a computer system at a cost of $370.80. the selling price was first at $ 618, but then the store advertised a 20 % markdown on the system. answer parts a and b. a. find the current sale price.

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?