A10-foot piece of string is cut into two pieces so that the longer piece is 1 footfoot longer than twice the shorter piece. if the shorter piece is x feet long, find the lengths of both pieces.

With number 11 ( show how you got the answer)

Astudent must have an average on five test that is greater than it equal to 80% but less than 90% to receive a final grade of b. devon's greades on the first four test were 78% 62% 91% and 80% what range if grades on the fifth test would give him a b in the course? ( assuming the highest grade is 100%)

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.