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anonymous

  • one year ago

The angles shown below are supplementary: A pair of supplementary angles is shown. One angle measures 10x and the other angle measures 60 degrees. What is the value of x? 6° 9° 12°

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  1. anonymous
    • one year ago
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    @amistre64 last one i promise sorry (:

  2. amistre64
    • one year ago
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    well we need a definition, what does it mean to be complementary angles?

  3. amistre64
    • one year ago
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    ugh, supplementary angles that is

  4. amistre64
    • one year ago
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    might as well find the definition of both, knowing what complementary and supplementary angles are wont hurt :)

  5. anonymous
    • one year ago
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    hold on

  6. anonymous
    • one year ago
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    two angles are supplimentary when they add up to 180 degrees

  7. amistre64
    • one year ago
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    thats a good definition, so all we need to do is add the angles and equate it to 180 10x + 60 = 180 .... what should x be?

  8. anonymous
    • one year ago
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    arent we supposed to subtract something

  9. amistre64
    • one year ago
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    sure, it looks like that +60 is getting in the way, lets subtract it ... from BOTH sides 10x + 60 = 180 - 60 -60 -------------- 10x + 0 = 120 so, now we can focus on: 10x = 120 what would you attempt now?

  10. amistre64
    • one year ago
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    10, times what, is 120?

  11. anonymous
    • one year ago
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    12

  12. amistre64
    • one year ago
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    the 10x = 120, when x=12

  13. amistre64
    • one year ago
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    and 10x + 60 = 180, when x=12

  14. anonymous
    • one year ago
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    so 12 degrees is the answer (:

  15. amistre64
    • one year ago
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    well, not 12 degrees, 10x degrees, x is just a number that makes that value of 10x degrees equal ,120 degrees

  16. amistre64
    • one year ago
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    x=12 will suffice

  17. anonymous
    • one year ago
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    so then what is the answer ?

  18. amistre64
    • one year ago
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    hmm, i just noticed that they choose to put it as 12 degrees. old tired eyes .... sure, lets pick the one thats a 12, if you want to tack on a degree notation, its fine apparently :)

  19. anonymous
    • one year ago
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    ok Thank you so much ! (:

  20. amistre64
    • one year ago
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    yep

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