H E L P ‍
Evaluate the expression if x = 7 and y = 12
5x - y

Why is it difficult to find length of the hypotenuse the same way the length of the legs can be found?

To solve the system of equations below, pedro isolated the variable y in the first equation and then substituted it into the second equation. what was the resulting equation? { 5y=10x {x^2+y^2=36

Bob is putting books on a shelf and takes a break after filling 18 1/2 inches on the book shelf. the book shelf is now 2/3 full. how long is the entire bookshelf?