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anonymous

  • 5 years ago

the mean of 6, 9, and 18 is equal to the mean of 12 and y. What is the value of y ?

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  1. nowhereman
    • 5 years ago
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    Can you write down what the given condition is, in mathematical terms?

  2. anonymous
    • 5 years ago
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    That is all I have

  3. nowhereman
    • 5 years ago
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    Yes, but what is the mean of several numbers in formula?

  4. nowhereman
    • 5 years ago
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    You see, I'm trying to help you find the solution yourself. Where is the problem — do you know what the mean is?

  5. anonymous
    • 5 years ago
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    Oh sorry, the mean means average.

  6. nowhereman
    • 5 years ago
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    Yes and for some numbers a,b,c, how do you calculate it?

  7. anonymous
    • 5 years ago
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    y=10

  8. anonymous
    • 5 years ago
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    show me how you work it out

  9. nowhereman
    • 5 years ago
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    So you don't want my help?

  10. anonymous
    • 5 years ago
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    yeah i do but can you show me how to work it out

  11. nowhereman
    • 5 years ago
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    I can lead you along the path; First you have to write down those two means as formula. Of course the one for 6,9,18 can imediately be calculated completely.

  12. anonymous
    • 5 years ago
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    Shine already worked it out but he/she didn't show us how to work it out

  13. nowhereman
    • 5 years ago
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    I don't understand, what your problem is... Why don't you do what I tell you?

  14. anonymous
    • 5 years ago
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    Ok

  15. anonymous
    • 5 years ago
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    (6+9+18)/3=(12+y)/2=>y=10

  16. anonymous
    • 5 years ago
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    I think you are right because you have the same answer as Shine

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