The percentage of the sample population with brown eyes and black hair is larger than the percentage of the sample population with blue eyes and black hair by __ percentage points. (Round off your answer to the nearest whole number.)

Which value would be a solution for x in the inequality 47-4x< 7

Molly shared a spool of ribbon with 12 people. each person received 3 feet of ribbon. which equation can she use to find r, the number of feet of ribbon that her spool originally had?

Gravel is being dumped from a conveyor belt at a rate of 25 ft3/min, and its coarseness is such that it forms a pile in the shape of a cone whose base diameter and height are always equal. how fast is the height of the pile increasing when the pile is 14 ft high? (round your answer to two decimal places.) ft/min