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anonymous

  • one year ago

Find the length of BD such that ABCD is a parallelogram. A. 7 B. 8 C. 10 D. 14

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  1. anonymous
    • one year ago
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  2. DanJS
    • one year ago
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    DE = EB you can solve for y from that

  3. anonymous
    • one year ago
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    4y-5 = 2y+1 ?

  4. DanJS
    • one year ago
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    yep

  5. DanJS
    • one year ago
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    so y=3 put that into the length to figure BD

  6. anonymous
    • one year ago
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    I'm confused :o

  7. DanJS
    • one year ago
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    4y - 5 = 2y + 1 4y - 2y = 1 + 5 2y = 6 y = 3

  8. anonymous
    • one year ago
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    ohh so 6=6 ?

  9. DanJS
    • one year ago
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    yes, just divided both sides by 2 for the last step

  10. anonymous
    • one year ago
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    6/2 = 3

  11. DanJS
    • one year ago
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    right, y=3

  12. DanJS
    • one year ago
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    Now that you know what y is, you can calculate the length of BD BD = (4y - 5) + (2y + 1) = (4*3 - 5) + (2*3 + 1) = 7 + 7 = 14

  13. anonymous
    • one year ago
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    ohh thank you, I was confused as to what equation I was suppose to plug 3 into haha!

  14. DanJS
    • one year ago
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    no prob

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