Select all that apply. there is a ratio of 3 boys to 4 girls in a class. which of the following are the correct ratios for the class? 3 boys to 7 students 4 girls to 3 boys 3 boys to 7 girls 4 girls to 7 students

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?