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KatherinePierce1864

  • 3 years ago

6. If ACB is a right angle, m<1 = 4y, and m<2 = 2y + 18, find m<2. (1 point) 12º 48º 36º 42º

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  1. KatherinePierce1864
    • 3 years ago
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  2. lgbasallote
    • 3 years ago
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    here's a hint.. \[\angle ACB = m\angle 1 + m\angle 2 = 90\] does that help? or do you need more help?

  3. KatherinePierce1864
    • 3 years ago
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    More please, if you don't mind.

  4. lgbasallote
    • 3 years ago
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    what is the value of m<1 according to the problem?

  5. KatherinePierce1864
    • 3 years ago
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    4y?

  6. lgbasallote
    • 3 years ago
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    right. and m<2 is?

  7. KatherinePierce1864
    • 3 years ago
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    2y+18

  8. lgbasallote
    • 3 years ago
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    right. and i said m<1 + m<2 = 90 so 4y + 2y + 18 = 90 solve for y and tell me what you get

  9. KatherinePierce1864
    • 3 years ago
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    y=12?

  10. KatherinePierce1864
    • 3 years ago
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    So 12 is the answer?

  11. lgbasallote
    • 3 years ago
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    nope. that's just y

  12. lgbasallote
    • 3 years ago
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    m<2 = 2y + 18 so to solve m<2 you have to substitute y into 2y + 18 make sense?

  13. KatherinePierce1864
    • 3 years ago
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    Okay so it would be 4(12) +2(12)+18...?

  14. lgbasallote
    • 3 years ago
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    no...substitute y into 2y + 18 only

  15. KatherinePierce1864
    • 3 years ago
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    so 2(12)+18

  16. lgbasallote
    • 3 years ago
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    right

  17. KatherinePierce1864
    • 3 years ago
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    which equals 42?

  18. lgbasallote
    • 3 years ago
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    right

  19. KatherinePierce1864
    • 3 years ago
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    so 42 is my answer?

  20. lgbasallote
    • 3 years ago
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    yes

  21. KatherinePierce1864
    • 3 years ago
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    Thank you!! :)

  22. lgbasallote
    • 3 years ago
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    welcome

  23. KatherinePierce1864
    • 3 years ago
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    Oh I have one more question, that goes to the same photo above. 4. What is another name for <1? C DCA ACB CDA I choose CDA as my answer but I'm not sure if that's right.

  24. KatherinePierce1864
    • 3 years ago
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    or it might be DCA, I'm not sure.

  25. lgbasallote
    • 3 years ago
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    |dw:1348283028935:dw| that's how m<1 looks right?

  26. KatherinePierce1864
    • 3 years ago
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    Yes

  27. lgbasallote
    • 3 years ago
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    can you identify the letter of the middle of that angle?

  28. KatherinePierce1864
    • 3 years ago
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    C?

  29. lgbasallote
    • 3 years ago
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    right. C is the middle. and what are the endpoints?

  30. KatherinePierce1864
    • 3 years ago
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    A and D

  31. KatherinePierce1864
    • 3 years ago
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    So C would be inthe middle, right? so it would be DCA?

  32. lgbasallote
    • 3 years ago
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    right

  33. KatherinePierce1864
    • 3 years ago
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    Thanks!

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