Express the sum of each pair of numbers as a product of the greatest common factor of the numbers and another sum.
9. 42+105 10. 54+90

Which values for a and b will create infinitely many solutions for this system of equations? ax-y=8 2x+y=b

List the sides of δrst in ascending order (shortest to longest) if: m∠r =x+28°, m∠s = 2x+16°, and m∠t = x+12

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