Answer:
A: -2
Step-by-step explanation:
You want some factor k such that k(5x) +(10x) = 0. That is, 5k+10 = 0. The solution to this is k=-2, corresponding to selection A.
k = -2 for sure
I normally multiply 5x+10y=15 by -2 to cancel out the x's.
This is because you can only solve the problem if one of your variables is canceled out and then you solve!
6=p
We want to isolate p, so we can first multiply by p on both sides.
24/p=4
24=4p
Then, divide by 4.
207 or option a is the answer
d
Answer: 25 pencils each
-2.
f(0) = 0^2 + 8(0) - 2
= -2.
