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19 October, 16:34

The perimeter of a triangle whose sides are of lengths 3x, 3x+7 and x

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Answers (2)
  1. 19 October, 16:49
    0
    The perimeter is 7x+7

    The three side lengths of the triangle are

    3x, 3x+7, and x

    which add to

    (3x) + (3x+7) + (x) = (3x+3x+x) + 7 = 7x+7

    We can optionally factor 7x+7 to get 7 (x+1)
  2. 19 October, 16:57
    0
    7x+7

    Step-by-step explanation:

    The perimeter of a triangle can be found by adding all the side lengths up.

    The 3 side lengths are 3x, 3x+7 and x.

    We can add these lengths together to find the perimeter.

    3x+3x+7+x

    Combine like terms. Add all the terms with a variable (x) : 3x, 3x and x.

    (3x+3x+x) + 7

    7x+7

    The perimeter of the triangle is 7x+7
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