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anonymous

  • one year ago

Find the length of AB A. 2 B. 6 C. 21 D. 31

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  1. anonymous
    • one year ago
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    Find the length of AB A.2 B.6 C.21 D.31

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  2. anonymous
    • one year ago
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    I will give a medal! Please please help

  3. welshfella
    • one year ago
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    the 2 lots of 3 line segments are in the same proportion ' so 6/7.5 = 2x / (2x + 1) solve this for x then plug in this value of x to get the 3 segments on left side add them up to get length of AB

  4. anonymous
    • one year ago
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    x=2

  5. anonymous
    • one year ago
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    so how do i plug this in

  6. welshfella
    • one year ago
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    |dw:1438184218791:dw|

  7. anonymous
    • one year ago
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    yes that's what i did

  8. welshfella
    • one year ago
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    x = 2 is correct well bottom segment = 2x = 2 *2 = 4

  9. welshfella
    • one year ago
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    do the same with 2x + 1 and 6x

  10. anonymous
    • one year ago
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    what's the bottom segment i'm really confused and i have limited time to answer :(

  11. welshfella
    • one year ago
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    the one on left side at bottom 2x

  12. anonymous
    • one year ago
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    so can you draw me how to plug in x=2

  13. anonymous
    • one year ago
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    cause i'm honestly confused

  14. welshfella
    • one year ago
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    |dw:1438184392654:dw|

  15. welshfella
    • one year ago
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    = 2*2 = 4

  16. anonymous
    • one year ago
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    so that's 4

  17. welshfella
    • one year ago
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    |dw:1438184432164:dw|

  18. welshfella
    • one year ago
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    yes and 5 is next one uup and the top one = 6*2

  19. anonymous
    • one year ago
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    okay and the 6(2) which is 12

  20. anonymous
    • one year ago
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    so the answer is 21

  21. welshfella
    • one year ago
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    right

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