a company that makes hair care products had 5,000 people try a new shampoo. Of the 5,000 people 30 had a mild allergic reaction. What percent of the people had a mild allergic reaction.

How many liters of peroxide should be added to 12 liters of an 8% peroxide solution so that the resulting solution contains 16% peroxide?   original added new amount of peroxide 0.96 liters x 0.96 + x amount of solution 12 liters x 12 + x 0.18 liter 1.14 liters 1.92 liters 2.10 liters

Change negative exponents to positive, then solve

What is 10+10+20 about the origin the square root of a triangle.