Answer:
Perimeter of the windows is P = 4s, or (here) P = 4(x+9) ft.
Step-by-step explanation:
If the area of the square is x^2 + 18x + 81 (ft^2), then the length of one side is given by the square root of that, and is x + 9 (ft). Note that (x + 9)^2 = x^2 + 18x + 81.
The perimeter of a square window of side length s is P = 4s.
Here, the perimeter of the square is P = 4(x+9) (ft).
The answer to the question
Answer: the answer is 1-3
Step-by-step explanation:
Email the teacher and see if she can check it at a later time
Answer:
x=6
Step-by-step explanation:
2(x-4)+x=10
expand into 3x-8
add 8 to both sides 3x-8+8=10+8
simplify 3x=18
divide both sides by 3 3x/3=18/3
simplify x=6
