I will help you if you repost this and please try to not make this blurry because I cant read it
Answer:
14 feet is how long he should make the cable.
Step-by-step explanation:
52 - 39 = 14
Hey there! I'm happy to help!
Let's call the length and width L and W respectively.
L=2W+8
2W+2L=124
We plug our value of L into the second equation and solve for W.
2W+2(2W+8)=124
We undo the parentheses with the distributive property.
2W+4W+16=124
Combine like terms.
6W+16=124
Subtract 16 from both sides.
6W=108
Divide both sides by 6.
W=18
We plug this W value into the first equation to solve for L.
L=2(18)+8
L=36+8
L=44
So, the length is 44 feet and the width is 18 feet.
Have a wonderful day! :D
The perimeter of the rectangle:
2(4y)+2(3y+3) and 146 units.
We have the equation:
![2(4y)+2(3y+3)=146\qquad|\text{use distributive property}\\\\8y+(2)(3y)+(2)(3)=146\\\\8y+6y+6=146\qquad|\text{combine like terms}\\\\14y+6=146\qquad|\text{subtract 6 from both sides}\\\\14y=140\qquad|\text{divide both sides by 14}\\\\y=10\\\\AD=4y\to AD=4(10)=40](https://tex.z-dn.net/?f=2%284y%29%2B2%283y%2B3%29%3D146%5Cqquad%7C%5Ctext%7Buse%20distributive%20property%7D%5C%5C%5C%5C8y%2B%282%29%283y%29%2B%282%29%283%29%3D146%5C%5C%5C%5C8y%2B6y%2B6%3D146%5Cqquad%7C%5Ctext%7Bcombine%20like%20terms%7D%5C%5C%5C%5C14y%2B6%3D146%5Cqquad%7C%5Ctext%7Bsubtract%206%20from%20both%20sides%7D%5C%5C%5C%5C14y%3D140%5Cqquad%7C%5Ctext%7Bdivide%20both%20sides%20by%2014%7D%5C%5C%5C%5Cy%3D10%5C%5C%5C%5CAD%3D4y%5Cto%20AD%3D4%2810%29%3D40)
Answer: AD = 40 units.