5 \sqrt{6} + 7 \sqrt{6 \\ }

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?

Solve the triangle. a = 21°, c = 105°, c = 5

An 18% discount on a watch saved a shopper $72. find the price of the watch before the discount