Is the substitution below done correctly if the solution to the equation is x=-1? 5x+9=2(3+x)
5(-1)+9=2(3+(-1))
-5+9=2(2)
4=4
LHS=RHS

Geometry: determine whether segment mn is parallel to segment kl. justify your answer. jm 6 mk 3 jn 8 nl 4

The function a represents the cost of manufacturing product a, in hundreds of dollars, and the function b represents the cost of manufacturing product b, in hundreds of dollars. a(t) = 5t + 2 b(t) = 7t - 2t +4 find the expression that describes the total cost of manufacturing both products, a(t) + b(t). a. 7t^2 - 7t + 2 b. 7t^2 + 3 +6 c. 7t^2 + 7t - 6 d. 7t^2 - 3t + 6

Find the values of y: 3y^3(y^2+ 2/3y)=0