Jillian is trying to save water, so she reduces the size of her square grass lawn by 8 feet on each side. The area of the smaller lawn is 144 square feet. In the equation (x – 8)2 = 144, x represents the side measure of the original lawn.
What were the dimensions of the original lawn?
A. 4 feet by 4 feet
B. 8 + 6 StartRoot 2 EndRoot feet by 8 + 6 StartRoot 2 EndRoot
C. 8 Minus 6 StartRoot 2 EndRoot feet by 8 + 6 StartRoot 2 EndRoot
D. 20 feet by 20 feet
Answers
Answered by
7
Given: The area of the smaller lawn is 144 square feet.
To find: What were the dimensions of the original lawn?
Solution:
- Now we have given she reduces the size of her square grass lawn by 8 feet on each side.
- the equation is:
(x – 8)^2 = 144
- Solving the equation, we get:
(x - 8)^2 = 12^2
- Taking square root, we get:
x - 8 = 12
x = 20
Answer:
Therefore, the dimensions of the original lawn were 20 feet by 20 feet, that is 4 th option.
Answered by
0
Answer:
D.
Step-by-step explanation:
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