What is the length of bc in the right triangle below?

6n^2-7n-75=0 solve by quadratic formula

Y=(x+3)(x-4)(x+1)^2 sulutions? multiplicity?

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