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27 January, 20:29

The length of a rectangle is three times the width. Which algebraic expression represents the perimeter of the rectangle? A. 3x+x B. 4x C. x+x+x+3x D. X+3x+x+3x

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  1. 27 January, 20:44
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    D

    Step-by-step explanation:

    The perimeter of a rectangle is found using P=2l+2w. For this reactangle, l=3x since its 3 times the width. The width is just x.

    Then the perimeter is P = 2*3x+2*x = 6x+2x=8x.

    Answer D is the correct choice since x+3x+x+x+3x = 8x.
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