Acompany that makes hair-care products had 9 comma 000 people try a new shampoo. of the 9 comma 000 people, 27 had a mild allergic reaction. what percent of the people had a mild allergic reaction?

The value of x in this system of equations is 1. 3x + y = 9 y = –4x + 10 substitute the value of y in the first equation: combine like terms: apply the subtraction property of equality: apply the division property of equality: 3x + (–4x + 10) = 9 –x + 10 = 9 –x = –1 x = 1 what is the value of y?