The ratio of height to width of a tv screen is 9 to 16 how high is a screen that is 30 inches wide

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.)

What is the square root of 45? (step by step working plz)

The sum of the reciprocal of a positive number and the reciprocal of 2 more than the number is 3/4 equation: the number is