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Math Help - Please Help ASAP tricky question

  1. #1
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    Please Help ASAP tricky question

    So i have a tricky question in my take-home intermediate algebra test, but i dont kno if its worded strangely or what... anyway if you could help me out that would be great.

    Note: ONLY ANSWER IF you for sure know how to do the problem, because this counts towards my grade.. thanks in advance.

    Question:

    y varies jointly as m and the square of n, and inversely as p. y=15 when m=2, n=1, and p=6. Find y when m=3, n=4, and p=10.
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  2. #2
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    Quote Originally Posted by bayarea1337 View Post
    Question:

    y varies jointly as m and the square of n, and inversely as p. y=15 when m=2, n=1, and p=6. Find y when m=3, n=4, and p=10.
    According to the problem,
    y = k*mn^2/p
    Substitute the first set of data and find k.
    Then substitute the second set of data to find required y value.
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  3. #3
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    According to the problem,
    y = k*mn^2/p
    Substitute the first set of data and find k.
    Then substitute the second set of data to find required y value.


    just to be clear * means multiply, and no clue what does ^ mean?

    but thank you so much for the help, you made that other one easy!
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  4. #4
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    * means multiplication and ^ means power.
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  5. #5
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    what is K? where did that come from? there is no k in the problem as far as i can see.


    If anyone would be willing to walk through the problem clearly, i would really appreciate it... i've never done a problem likes this before.
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  6. #6
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    k is called the constant of proportionality.
    If a varies with b then a = kb.
    Amount A spent on apple varies with the number of apples N.
    Then A = kN.
    In this case k is a constant and it is the cost of one apple.
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  7. #7
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    thanks again, i understand now.. you're a lifesaver.
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  8. #8
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    Quote Originally Posted by bayarea1337 View Post
    So i have a tricky question in my take-home intermediate algebra test, but i dont kno if its worded strangely or what... anyway if you could help me out that would be great.

    Note: ONLY ANSWER IF you for sure know how to do the problem, because this counts towards my grade.. thanks in advance.

    Question:

    y varies jointly as m and the square of n, and inversely as p. y=15 when m=2, n=1, and p=6. Find y when m=3, n=4, and p=10.
    MHF policy is to not knowingly help with work that counts towards your grade - it's meant to be your own work not the work of others.

    Thread closed.
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