A rectangle has a length of x and a width of 5x +4 - x2. Find the perimeter of the rectangle when the length is 5 feet.
1 answer:
Answer:
18 feet
Step-by-step explanation:
Perimeter = 2(length + width)
=> 2(x + 5x + 4 - x²)
=> 2(6(5) + 4 - (5)²)
=> 2(9)
=> 18 feet
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