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5 May, 20:54

Kat is painting the edge of a triangular stage prop with reflective orange paint the letters of the lengths of the edges of the triangle are (3x-4) feet (x2 - 1) feet and (2x2 - 15) feet what is the perimeter of the triangle if x = 4

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  1. 5 May, 22:26
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    perimeter = 40 feet

    the perimeter is the sum of the lengths of the sides

    evaluating each side for x = 4

    3x - 4 = (3 * 4) - 4 = 12 - 4 = 8

    x² - 1 = 4² - 1 = 16 - 1 = 15

    2x² - 15 = 2 (4) ² - 15 = 32 - 15 = 17

    the sides have lengths of 8, 15 and 17

    perimeter = 8 + 15 + 17 = 40 feet
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