A rectangle has length of 2x+4 and width of 5x²+7x-3. Find the perimeter of the rectangle if the length is 10 inches.

asked Jun 5, 2023 4.6k views

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A rectangle has length of 2x+4 and width of 5x²+7x-3. Find the perimeter of the

rectangle if the length is 10 inches.

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Answer:

146 inches

Explanation:

$2x+4=10 \implies x=3 \\ \\ w=5(3)^2+7(3)-3=45+21-3=63 \\ \\ P=2(10+63)=146$

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