Answer:
Commutative property
Step-by-step explanation:
Hope that helps!
You would have to Find the GCF
Answer:
you put two of the equations together and then the last one there you just automatically added on
Step-by-step explanation:
4x-7y=-28
25xy
Let's look at the picture, let's imagine that the gray line is the perimeter fence and that the red OR the blue is the one dividing it. We can see that the blue line is longer than the red one, so it will be advantageous, to have a bigger area, to have the dividing fence the smallest possible.
Let's say then that the width (W) is bigger (or equal) to the length (L), so we have:

The area is W*L, so we have

this function is a parabola facing down, its zeros are 0 and 80, therefore its maximum is when L=40
hence, L=40 and W=(240-120)/2=60
It will be a rectangle, measuring 60x40 and the divinding fence will be 40
X>-2
any point to the right of x=-2 is a solution
y<u><</u>2x+7
to find, plot 2 points by subsitution
when x=0, y=7
when x=1, y=9
plot the points (0,7) and (1,9)
the point is (-1,4)
draw a line through them
then try a point to see which side to shade on
is 0,0 in that shaded reigon?
no
shade below
look at shaded reigon