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  1. #1
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    help

    How did they come up with this answer?

    [1-(200/1000)1/10]x100=14.86

    the 1/10 looks to be at the top of the )
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  2. #2
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    Hi

    0.2^{0.1}\;=\;0.8513

    1-0.2^{0.1}\;=\;0.1486

    (1-0.2^{0.1})100\;=\;14.86

    These are not equalities but approximations
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  3. #3
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    do you mean [1 - (200/1000)^1/10] x 100?

    If so,

    parentheses first, so 200/1000 = 0.2
    exponents next, so .2^(1/10) = 0.851339923
    next parentheses, so 1 - 0.851339923 = 0.148660077
    lastly multiply by 100, so 0.148660077 x 100 = 14.8660077 or 14.87, but I guess they rounded off differently and got 14.86

    help?
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  4. #4
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    edited
    Last edited by Jameson; December 2nd 2008 at 10:52 AM. Reason: post not needed
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  5. #5
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    Quote Originally Posted by sethpa8 View Post
    How did they come up with this answer?

    [1-(200/1000)1/10]x100=14.86

    the 1/10 looks to be at the top of the )


    can someone explain to me
    This is just rude. You don't need to restate the question. Two people have tried helping you so try to use their advice.
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  6. #6
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    ?

    Two of us replied, hold your horses!! :P
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  7. #7
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    [quote=sethpa8;230458]
    Quote Originally Posted by sethpa8 View Post
    How did they come up with this answer?

    [1-(200/1000)1/10]x100=14.86

    the 1/10 looks to be at the top of the )


    can someone explain to me
    Please read the rules of this forum.

    Bumping is not allowed.

    I have already banned you from the chatbox for disregarding the rules, and showing disrespect to authority.
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  8. #8
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    PEMDAS

    I'm just going to add real quick that this problem is just to see if you can correctly use orders of operation. Remember PEMDAS?

    Please Excuse My Dear Aunt Sally

    P - Parentheses
    E - Exponents
    M - Multiplication
    D - Division
    A - Addition
    S - Subtraction

    Move from left to right in the equation once these have been satisfied
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