ZA and B are vertical angles. If mZA = (3x + 13) and mZB = (5x + 9)°, then find the measure of ZA.

1. a parachutist is 800 feet above the ground when she opens her parachute. she then falls at a constant rate of 5 feet per second. select the equation that represents this situation. h = -800t + 5 y = -5x + 800 h = 5t - 800 y = 800x + 5 i need

7. the area of the playing surface at the olympic stadium in beijing isof a hectare. what area will it occupy on a plan drawn to a scaleof 1: 500?

Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5