Aperson is using a new tennis ball launching machine that is 15 inches by 15 inches by 14.
assuming the machine uses tennis balls that are spherical and 2.7 inches in diameter, how many
tennis should fit in one of the top of the machine?

Solve |2x - 5| = 4 if anyone could , that would be great

Achemist has 200 ml of a 10% sucrose solution. she adds x ml of a 40% sucrose solution. the percent concentration, y, of the final mixture is given by the rational function: the chemist needs the concentration of the final mixture to be 30%. how many milliliters of the 40% solution should she add to the 10% solution to get this concentration?

Ahiker stands at an unknown elevation before he ascends 2 miles up a mountain to an elevation of 9 miles. find the elevation of the hiker before his ascent.