Using the perimeter of a rectangle, it is found that she can make a deck of 122 ft wide.
<h3>What is the perimeter of a rectangle?</h3>
The perimeter of a rectangle of length l and width w is given by:
![P = 2(l + w)](https://tex.z-dn.net/?f=P%20%3D%202%28l%20%2B%20w%29)
In this problem:
- She has enough wood to build a deck that is 280ft, hence P = 280.
- The length is of 10 feet, hence l = 10.
- Considering that the deck's width will be added to the actual width of 8 feet, we have that w = 8 + w.
Then:
![P = 2(l + w)](https://tex.z-dn.net/?f=P%20%3D%202%28l%20%2B%20w%29)
![280 = 2(10 + 8 + w)](https://tex.z-dn.net/?f=280%20%3D%202%2810%20%2B%208%20%2B%20w%29)
![36 + 2w = 280](https://tex.z-dn.net/?f=36%20%2B%202w%20%3D%20280)
![2w = 244](https://tex.z-dn.net/?f=2w%20%3D%20244)
![w = \frac{144}{2}](https://tex.z-dn.net/?f=w%20%3D%20%5Cfrac%7B144%7D%7B2%7D)
![w = 122](https://tex.z-dn.net/?f=w%20%3D%20122)
She can make a deck of 122 ft wide.
You can learn more about the perimeter of a rectangle at brainly.com/question/10489198
Answer:
-8/5?
Step-by-step explanation:
Since it's rise/run, you go down 8 and go right 5.
Answer:
22
Step-by-step explanation:
Count the dot
Answer:
1 1/2
Step-by-step explanation:
Hope this helps!