One leg of a right triangle is 12 inches, and the measure of the angle opposite that leg is $30^\circ$. what is the number of inches in the hypotenuse of the triangle?

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of