Combine the like terms for this problem:
За + 9y - 7а - 2y + 6а - Зу

The diagonals of a quadrilaretral intersect at (-1,4). one of the sides of the quadrilateral is bounded by (2,7) and (-3,5) determine the coordinates of the other side in order for the quadrilaretral to be a square.

The graph below shows the height of a projectile t seconds after it is launched. if acceleration due to gravity is -16 ft/s2, which equation models the height of the projectile correctly?

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?