David is standing 500 feet away from the base of a cell phone tower. The angle of elevation from his eyes to the top of the tower is 78. If David's eyes are 6 feet above the ground, how tall is the tower?

Acircle has a diameter will endpoints of (-2,8) and (6, 4). what is the center of the circle

The sat and act tests use very different grading scales. the sat math scores follow a normal distribution with mean 518 and standard deviation of 118. the act math scores follow a normal distribution with mean 20.7 and standard deviation of 5. suppose regan scores a 754 on the math portion of the sat. how much would her sister veronica need to score on the math portion of the act to meet or beat regan's score?

How long does it take natsumi to clean up after she is done? table: .area time30. 245. 2.7560. 3.5