Apond at a hotel holds 4290 gallons. the groundskeeper drains the pond at a rate of 78 gallons per hour. how long will it take to drain the pond

At a sand and gravel plant, sand is falling off a conveyor and onto a conical pile at a rate of 16 cubic feet per minute. the diameter of the base of the cone is approximately three times the altitude. at what rate is the height of the pile changing when the pile is 12 feet high? (hint: the formula for the volume of a cone is v = 1 3 πr2h.)

Use the elimination method to solve the systems of equations. choose the correct ordered pair. 7x+4y=39

What is the radical expression that is equivalent to the expression 27 1 over 5?