Answer:7x+9
Step-by-step explanation:7x+6=3x+7=7x+9
Answer:
y=3
Step-by-step explanation:
-5-7y=-20y+34 you add the 5 over and add 20y to the other side to get this:
13y=39 then you divide that by 13 to get the anser of 3.
On the sheet, it's not even asking you for the dimensions.
It's just asking you to set up the <em>equation that you would use</em>
to find the dimensions. That's a great way to do it, because
nobody actually needs the answers, the whole thing is only
meant to help you learn HOW to find them.
==========================================
Call the width of the window 'W' .
We know that the length is 5 feet more than the width, so the length is (W + 5).
The area is (length times width).
Area = (W + 5) times (W).
36 = (W + 5) W
36 = W² + 5W
Subtract 36 from each side:
W² + 5W - 36 = 0
That's choice-4 .
