A water tank has the shape of the bottom half of a sphere with radius r = 1 meter. If the tank is full, how much work is required to pump all the water out the top of the tank?

In triangles abc and wxy, a=w and b=x which of the following must be true to prove abc=wxy by the aas theorem? a.ab=bc b.bc=xy c.ab=wx d.

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

Use the elimination method to solve the systems of equations.choose the correct ordered pair. 7x+4y=39