Answer: (8)(-4.5)
Step-by-step explanation: If you were to multiply -4.5 • -8 it would be a positive number but if you multiply (8)(-4.5) that would equal a negative number
Just plug in one of the other (doesn't matter which one) so it will look like
-3x+6=5x+38
or
5x+38=-3x+6 (it's the same thing as the first one)
Then you solve for x and you substitute that value so you can get y.
Hope this helped :)
The answers to the questions
Answer:
w = 99
Step-by-step explanation:
45 = w - 54
99 = w
<em>good luck, i hope this helps :)</em>
The area of a rectangle is given by the multiplication of its dimensions:

In this case, we have an exact value for the area, and two variable expressions for width and length. Let's replace the formula above with what we're given:

If you expand the right hand side, you have

And if you move all terms to the right hand side, this becomes

This is a quadratic equation, since it is in the form
, where 
If you plug these values in the generic formula

you get

Let's see which dimensions they yield:

But the dimensions of a rectangle can't be negative, so we can't accept this answer.
The other solution yields

So these are the dimensions of the rectangle