What is the answer for 2= -7 + s?

Consider the diagram. which line segment has the same measure as st? rx tx sr xs

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.

What is the simplified form of square root of 400 to the 100th power ?