Solve each system of equations by substitution or elimination.
1. 3x - y = 7
2. 2x + 2y = 10

Hunter designs two flags for his adventure club. what is the length of the base, x, of the larger flag? enter your answer, as a decimal, in the box.

Which expression gives you the distance between the points (5,1)and(9,-6)

The measures of the legs of a right triangle are 15m and 20m . what is the length of the hypotenuse