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24 June, 18:13

Let C be between D and E. Use the segment addition postulate to solve for m. DC = 6m - 21 CE = 7m - 18 DE = 65 a. - 3 c. 13 b. 5 d. 8

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  1. 24 June, 19:07
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    D-C-E

    DC = 6m - 21

    CE = 7m - 18

    DE = 65

    DC + CE = DE

    6m - 21 + 7m - 18 = 65

    13m - 39 = 65

    13m = 65 + 39

    13m = 104

    m = 104/13

    m = 8

    DC = 6m - 21 = 6 (8) - 21 = 48 - 21 = 27

    CE = 7m - 18 = 7 (8) - 18 = 56 - 18 = 38
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