A 5000-lb wrecking ball hangs from a 20-ft cable that weighs 6lb/ft attached to a crane. Calculate the work done if the crane lifts the ball from ground level to 20ft in the air by pulling in the cable. W= ? ft-lbs

Aswimming pool is a rectangle with semicircles on the end. the rectangle is 12 meters wide and 30 meters long. the diameter and width of the swimming pool are equal. sketch and label an overhead diagram of the swimming pool. find the area of the swimming pool floor.

What is the solution to the equation? k/6.4=8.7 2.3 5.568 15.1 55.68

Which of the following constants can be added to x2 - 3x to form a perfect square trinomial?