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21 April, 22:50

The perimeter of a trapeziod is 39a - 7. Three sides have the following lengths: 9a, 5a + 1, and 17a - 6. What is the length of the fourth side?

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  1. 21 April, 23:06
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    6a - 2

    Step-by-step explanation:

    Add all the sides, that are given to you, up

    (9a) + (5a + 1) + (17a - 6)

    (14a + 1) + (17a - 6)

    31a - 5

    Then subtract it by 39a - 7

    (39a - 7) - (31a - 5)

    6a - 2
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Home » Mathematics » The perimeter of a trapeziod is 39a - 7. Three sides have the following lengths: 9a, 5a + 1, and 17a - 6. What is the length of the fourth side?
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