Answer:
8
Step-by-step explanation:
Before Fred bought 9 more, he had 4. Since 4 is half the number he started with, he started with 8 comic books.
(X+y)(x-y) this is the answer
Answer:
680 kilometer per hour
Step-by-step explanation:
Answer:
A (-5,2)
Step-by-step explanation:
5x+y=-23
7x-3y=-41
3×(5x+y)=3×(-23)
15x+3y=-69
<u>+</u><u>7x-3y</u><u>=</u><u>-41</u>
<u>22x</u>=<u>-110</u>
22. 22
x=-5
5x+y=-23
5(-5)+y=-23
-25+y=-23
<u>+25</u><u>.</u> <u>+25</u>
y=2
When using elimination you add both equations together so that one variable cancels out the other. In this situation, y can be the variable. You must get the y-variables to cancel out leaving just the x- variables to solve for.
It Has to me volume D because you would need to multiply and divide
