Answer:
just mark points it is very easy
Answer:
-4
Step-by-step explanation:
when the signs are different the result is negative
(+ )*( - )= ( -)
I believe that it's no,<span> it is not a valid inference because her classmates do not make up a random sample of the students in the school. But I can't be sure, I really haven't done much on inferences, especially in math. I know for sure that her inference is incorrect though. Hope this helps, even a bit!</span>
X=2. You use substitution to put the y=3x-5 into 6x+3y=15.
So you get 6x+3(3x-5)=15
=6x+9x-15=15
add 15 on both sides to get the x's alone and add the x's together.
6+9=15 -- 15+15=30
15x=30
30/15 =2
x=2