F(x) + g(x) = 5x^2 + 9x - 17; g(x) -f(x) = -x^2 -x -1
45/56
5/7 divided 8/9
5/7 times 9/8
45/56
<span>When solving a system of equations by substitution, meant by a useless result of (12=12) is no solution. The answer is letter B, the equation has no solution because it can have infinite solution. I hope the answer helps, thank you for posting your question here. </span>
Answer:
It should be 9 m :)
Step-by-step explanation:
