Which numbers are irrational? Select all that apply.

What is the value of  y  in the solution to the system of equations? x  +  y  =  12x  –  3y  =  –30a. –8b. –3c. 3d. 8

How much dextrose 70% must be mixed with dextrose 5% to prepare 1,000 ml of dextrose 20%?

Which of the following quartic functions has x = –1 and x = –2 as its only two real zeroes?