Why must an air traffic controller know a plane's velocity? A. to know how far away the plane is
B. to know how high the plane is flying
C. to know the plane's overall rate of motion
D. to know the plane's direction as well as its speed

How long would it take for a ball dropped from the top of a 576-foot building to hit the ground? round your answer to two decimal places.

Someone this asap for a group of students attends a basketball game. * the group buys x hot dogs at the concession stand for $2 each. * the group buys y drinks at the concession stand for $3 each. the group buys 29 items at the concession stand for a total of $70. how many hot dogs did the group buy?

Two triangles can be formed with the given information. use the law of sines to solve the triangles. b = 49°, a = 16, b = 14