Solve an equation to determine the unknown quantity. An ostrich that is 59 inches tall is 15 inches taller than 2 times the height of a kiwi. What is the height of a kiwi in inches? The kiwi is | inches tall.

Acollege is planning to construct a rectangular parking lot on land bordered on one side by a highway. the plan is to use 680 feet of fencing to fence off the other three sides. what dimensions should the lot have if the enclosed area is to be a maximum?

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle

Asource of laser light sends rays ab and ac toward two opposite walls of a hall. the light rays strike the walls at points b and c, as shown below: what is the distance between the walls?