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17 September, 10:08

The length of the edges of the triangle are (3x-4) feet, (x2-1) feet, and (2x-15) feet. What's is the perimeter of the triangle if x=4

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  1. 17 September, 13:24
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    40 feet

    Step-by-step explanation:

    The perimeter of a triangle is the distance around the triangle. It can be found by adding all the sides together. First, find the amount each side is by substituting x = 4 and simplifying.

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

    x² - 1 = (4) ² - 1 = 16 - 1 = 15

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

    Add the sides together, 8 + 15 + 17 = 40 feet
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