Ajar contains quarters and dimes. there are 120 total coins valuing $20.55. define a system of equations to represent the contents of the jar and then solve the system by substitution. how many quarters are in the jar?

Which representation has a constant of variation of -2.5

Acourt reporter is transcribing an accident report from germany. the report states that the driver was traveling 80 kilometers per hour. how many miles per hour was the driver traveling?

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 .