Find the number that makes the equivalent ratio to 84:4

21: __

Remmi wrote the equation of the line y=⅓(x+2) he solved for x and got x=3y-2 which of the following is an equivalent equation for x? a.x=y-11/3 b.x=y+7/3 c.x=3(y-⅔) d.x=3(y+⅔)

Ben bowled 124 and 188 in his first two games. what must he bowl in his third game to have an average of at least 160?

If 2(a^2+b^2)=(a+b)^2 then, > a+b=0, > ab=0, > a=b, > 2a=b