Chứng minh rằng tam giác với ba đỉnh (1, 2, 3), (4, 0, 5) và (3, 6, 4) có một góc vuông. Tìm hai góc còn lại.

Solve this and show you’re work step by step ! -5 3/4+3h< 9 1/4 -

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

Fanny mendelssohn manages all the magazines and paperback books at a local grocery store. she prices many paperbacks to sell at $7.99. the cost to the store is $5.29. what is the markup rate on a paperback book, based on its cost?