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To solve the system of equations below, grace isolated the variable y in the first equation and then substituted into the second equation. what was the resulting equation? 3y=12x x^2/4+y^2/9=1

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class

Secant be and cf intersect at point d inside a what is the measure of cde