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6 October, 09:27

A rectangle has side lengths of (2x-5) meters and (2x+6) meters. Write a linear expression in simplest form to represent the perimeter. Find the perimeter if the value of x is 12 meters

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  1. 6 October, 10:47
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    P = 8x + 2

    P = 98 when x = 12

    Step-by-step explanation:

    the perimeter is 2 times width + length

    P = 2 (w + l)

    w = 2x - 5

    l = 2x + 6

    replacing both terms in the perimeter:

    P = 2 (2x - 5 + 2x + 6)

    P = 2 (4x + 1)

    P = 8x + 2

    Evaluating P for x = 12

    P = 8 (12) + 2

    P = 98
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