James has x quarters. His brother has 4 times as many quarters as James has. How may quarters do they have altogether?

The longer leg of a 30° 60° 90° triangle is 16 times square root of three how long is a shorter leg

Abird on top of a 200 ft bridge tower sees a man standing on the lower part of the bridge (which is 50 ft above the ground). the angle of depression from the bird is 26 ̊. how far is the man from the base of the bridge tower? with explanation and pictures .

The probability brenda will recieve a telemarketing call is 15%. if she gets 20 calls a day, how many can she expect to be telemarketing calls ?