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AB ≅ CD. Find the length of BD.?

  1. Sep 6, 2009 #1
    1. The problem statement, all variables and given/known data

    AB ≅ CD. Find the length of BD.?

    img42.gif

    AB ≅ CD. Find the length of BD.


    2. Relevant equations


    A) 8
    B) 10
    C) 4
    D) 7
    E) -7



    3. The attempt at a solution


    AB = 2x + 5x + 7 = 7x + 7

    CD = 5x + 7 + 3x - 4 = 8x + 3

    AB ~= CD
    7x + 7 = 8x + 3

    7 - 3 = 8x - 7x => x = 4

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

    ans: A) 8
     
  2. jcsd
  3. Sep 6, 2009 #2
    correct. good job
     
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