Answer:
Okay so there are a few ways you can go about doing this.
Step-by-step explanation:
For number 1 you could say 5 - 7 = -2. I don't know if you need to use the same numbers for both the equations in number one, but 5 x -7 could work too.
For number 2 you could say 2 + 2 = 4 or 3 + 1 = 4. As for __ x __ = -5 you could say 2.5 x -2.5 = -5.
The rule is if you multiply a positive by a negative you get a negative. Just like if you multiply a negative by a negative you get a positive. And if you multiply a positive by a positive you get a positive.
I really hope this helps since it took me a while to understand what you were asking.
Answer:
c 2,3
Step-by-step explanation:
f(a) = 3a² + 8a + 5
substitute x = a into f(x)
f(a) = 3a² + 8a + 5
Solve for x in X-2 (x=8)
Substitute X=8 into 3x - 6y =18 (24-6y=18)
Solve for y in 24-6y=18 (y=1)
X=8 and y=1
Midpoint formula x1+x2/2, y1+y2/2
=5+5/2, 2+-5/2
=5, -1.5