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Math Help - Validity Problem

  1. #1
    Newbie
    Joined
    Feb 2010
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    Exclamation Validity Problem

    Dear Members

    I am really stuck with this Validity exercise. I do not know how the writer established the answers for row 5, 6 and 7.

    Could someone please assist me in providing me the formulas for working out the answers from row 5 to 7.

    I have another exercise like it to complete, but I was trying to back-engineer this one.

    Just fill in the formula at the bottom of the attachment and send back to me at d1210838@umail.usq.edu.au

    Thank you very much for your assistance, as I have no books to go by.

    Kindest Regards
    Geoff....
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  2. #2
    Super Member
    Joined
    Jul 2009
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    Right, no ones just going to do it for you and send it in for you.

    What about the rows do you not understand? The author is ordering his data in a neat manner, so that when it comes time to plug values into the linear coefficient, he can just read off from a list. I'm not sure what you are confused with on this exercise to be honest.
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