Answer:
what do u mean
Step-by-step explanation:
We just need to see everything that is not x as a number.
if I asked

we would solve it by combining like terms first. but, if I tell you not to do that, we would add 9 and 7(2) to both side and end up with

we would then divide both sides by 7

math is always math... it's just how we look at it. so, do the same steps!

add 9 and 7z to both side

divide both sides by 7
Answer:
The answer is the square root of 8, or 2root2.
Step-by-step explanation:
Use the distance formula.
d = sqrt((-3-(-5))^2 + (-3-(-1)))
d = sqrt(2^2 + 2^2)
d = sqrt(4 + 4)
d = sqrt8
d = sqrt4 * sqrt2
d = 2 * sqrt2
<em>First let's take our two given equations</em>
-2x-9y=-25
-4x-9y=-23
<em>Now we need to cancel out either </em><em>x</em><em> or </em><em>y </em><em>by making them the same values, but opposite on being negative or positive</em>
<em>We do this by multiplying the entire equation by a number </em>
-1(-4x-9y=-23)=<u>4x+9y=23</u>
<em>Now we have a new equation </em>
-2x-9y=-25
4x+9y=23
<em>Combine the two equations and your y will cancel out</em>
<em>2x=-2</em>
<em>Now we need to find </em><em>x</em><em> </em>
<em>2x=-2</em>
<em>Divide by 2 on each side </em>
<em>x=-1</em>
<em>Now we need to plugin our </em><em>x</em><em> to find the </em><em>y</em><em> by plugging the x into any of the first given equations</em>
<em>-2(-1)-9y=-25</em>
<em>2-9y=-25</em>
<em>-2 -2</em>
<em>-9y=-27</em>
<em>Divide by -9 on each side</em>
<em>y=3</em>
<em></em>
<em>x=-1, y=3</em>