The width of a rectangle measures (7k-2m)(7k−2m) centimeters, and its length measures (5k-m)(5k−m) centimeters. Which expression represents

Question

The width of a rectangle measures (7k-2m)(7k−2m) centimeters, and its length measures (5k-m)(5k−m) centimeters. Which expression represents the perimeter, in centimeters, of the rectangle?

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Thu Thảo 1 week 2021-07-22T05:05:06+00:00 1 Answers 2 views 0

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    2021-07-22T05:06:57+00:00

    Answer:

    P = 24k-6m

    Step-by-step explanation:

    The correct expressions are:

    W = 7k - 2m

    L = 5k - m

    Required

    The perimeter (P)

    This is calculated as:

    P = 2 *(L + W)

    So, we have:

    P = 2 *(5k - m + 7k -2m)

    Collect like terms

    P = 2 *(5k + 7k- m  -2m)

    P = 2 *(12k-3m)

    Open bracket

    P = 24k-6m

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