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anonymous

  • one year ago

Two car washers, Michelle and Nancy, are working on your car. Michelle can complete the work in 6 hours, while Nancy can complete the work in 3 hours. How many hours does the car washing take if they work together? 3 2 six eighths four thirds

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  1. anonymous
    • one year ago
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    someone please help me . i really need to get this done soon

  2. anonymous
    • one year ago
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    none whatsoever

  3. anonymous
    • one year ago
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    well actually im thinking its 6/8 but idk

  4. kropot72
    • one year ago
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    In one hour Michelle, working alone, can complete 1/6 of the work. In one hour Nancy, working alone, can complete 1/3 of the work. Therefore if they work together for one hour they can complete 1/6 + 1/3 =1/2 of the work. Can you now see how many hours they would take to do the job when working together?

  5. anonymous
    • one year ago
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    so is it 2?

  6. anonymous
    • one year ago
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    @kropot72

  7. kropot72
    • one year ago
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    Yes, 2 hours is correct.

  8. anonymous
    • one year ago
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    thank you can you possibly help me with another?

  9. kropot72
    • one year ago
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    You're welcome. I'll try to help.

  10. anonymous
    • one year ago
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    Which of the following expressions is the conjugate of a complex number with 2 as the real part and 3i as the imaginary part? 2 + 3i 2 − 3i 3i + 2 3i − 2 I'm thinking it's 3i+2

  11. anonymous
    • one year ago
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    @kropot72

  12. kropot72
    • one year ago
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    |dw:1438557699594:dw| The above example might help you. Note the reversal of sign.

  13. anonymous
    • one year ago
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    so would it be 3i+2?

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