Find the geometric mean of 64 and 49

True or false? many triangular shapes can be circumscribed about a given circle

Answer the questions in the attachment. a rescue helicopter is at point a and a rescue boat is at point e. the helicopter pilot spots boats in distress at points d and c,with angles as marked in the diagram. figure abce is a rectangle. the altitude of the rescue helicopter, represented by ae, is 5000 feet.

Tom drove 206 miles in 3.9 hours. estimate his average speed.