Buoys are located in the sea at points A, B , and C . ∠ ACB is a right angle. A C=3.0 mi B C=4.0 mi , and A B=5.0 mi . A ship is located at point D on AB^-- so that m∠ ACD=30° . How far is the ship from the buoy at point C ? Round your answer to the nearest tenth of a mile.