Simplify your answer and keep improper, if necessary. Mrs. Gribble was making 4 cakes and each cake required 1 1/2 cups of flour. How much flour did she use in all?

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?

Factor the expression using gcf 9b+45

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?