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anonymous

  • one year ago

Look at the figure below: What is the length, in units, of segment CD?

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  1. moazzam07
    • one year ago
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    what figure

  2. anonymous
    • one year ago
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  3. anonymous
    • one year ago
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    @moazzam07 i posted the picture

  4. LynFran
    • one year ago
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    its right there CD=5

  5. LynFran
    • one year ago
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    |dw:1436311436354:dw|

  6. anonymous
    • one year ago
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    but 5 isnt an answer choice these are the choices 11 7.2 5.5 10

  7. anonymous
    • one year ago
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    @Ghostedly

  8. anonymous
    • one year ago
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    @LynFran how is it 11 i just kinda wanted to go throught the work

  9. phi
    • one year ago
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    The marks mean the two lines are parallel. If we leave out all the lines except these |dw:1436305853611:dw|

  10. phi
    • one year ago
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    in other words, using the full diagram|dw:1436305955256:dw| because both triangles also have a 90 degree angle, two angles in each triangle are the same. because the 3rd angle must add up to 180, the remaining angles are = the triangles are similar

  11. phi
    • one year ago
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    now you can write a ratio side 5 in the bottom triangle is opposite the "double mark angle" side 6 in the top triangle ditto so 5/6 = hyp of bottom/ hyp of top 5/6 = 6/x solve for x

  12. anonymous
    • one year ago
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    Soo it would be 11 @phi

  13. LynFran
    • one year ago
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    no

  14. anonymous
    • one year ago
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    never mind 7.2

  15. anonymous
    • one year ago
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    i dont have a calculator with me can you do it for me @LynFran

  16. LynFran
    • one year ago
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    you answer is correct 7.2

  17. LynFran
    • one year ago
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    i was doing the trig ratio part wrong...sorry

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