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25 January, 09:02

The lengths (in inches) of two sides of a regular triangle are given by the expressions 5x+40 and 8x-13. Find the length of a side of a triangle.

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  1. 25 January, 09:31
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    Length = 128.3

    Step-by-step explanation:

    The 3 sides of a regular triangle are the same, the 2 sides that are in terms of x are equal:

    5x + 40 = 8x - 13

    40 + 13 = 8x - 5x

    53 = 3x

    17.7 = x

    The length of a side = 5 (17.7) + 40 = 128.3
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