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Thread: math equation help :(

  1. #1
    Tuna Freak Frankster's Avatar
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    math equation help :(

    ok,

    if someone earns 5$ the first day and earns 5$ more than that every day after that for a year, how much money does he have at the end of the year? What's the equation to solve this?
    $5+$10+$15+$20+$25+.. etc
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    hmm, I like to be big!!!
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    (5+1825)*182=330060 LOL I hope im right this time because the last time I did a math problem here I was wrong. Maybe someone else should try this.
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  3. #3
    Banned Praetorian's Avatar
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    its an arthimatic (sp?) number sequence since the difference between each number is a constant, d = 5.

    first we find out how much he earns the last day, with the formula ;

    an = a1 + (n -1)*d

    where n = 365

    that gives you

    a365 = 5 + (365-1)*5 = 1825

    then you can find the total of his earnings with the formula ;

    sn = n*(a1 + an )/2


    sn being the total money earned.

    s365 = 365*(5+1825)/2 = 333975

    so this dude will have earned $ 333,975 after a year.
    Last edited by Centaurion; 08-03-2003 at 11:31 AM.

  4. #4
    Tuna Freak Frankster's Avatar
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    Cool, thanks
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  5. #5
    Gettin Lean Goin_Big's Avatar
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    Banned Praetorian's Avatar
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    heheh i knew that 3 years with HS would pay off.

  7. #7
    hmm, I like to be big!!!
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    I feel my answer is more correct, PUNK!!!!


    or mine might be a day off, because I rounded it lazily.
    Last edited by nejar462; 08-03-2003 at 11:48 AM.
    Chris Mason is my master.....

    American cars are like fat people, sure, they have a lot of power, but they're not built well, and they have all that useless weight, plus they make both make funny noises.

    feel free to aim me, nejar462 im on a lot. Don't know much to warn you dudes, but im good at conversations.

    Belial in reference to Ronnie Coleman, "Some people say he still has blood in his steroid stream, but I doubt it. Gas isn't one of the side effects, but that massive bloated overly muscular freak of nature circus sideshow appearance might be what tips most people off."

  8. #8
    Gen_chat worst nightmare
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    Originally posted by nejar462
    I feel my answer is more correct, PUNK!!!!


    or mine might be a day off, because I rounded it lazily.
    Just blame it on the taxes.

  9. #9
    hmm, I like to be big!!!
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    lol yeah, thats right, i figured a tax in there thats why im wrong.
    Chris Mason is my master.....

    American cars are like fat people, sure, they have a lot of power, but they're not built well, and they have all that useless weight, plus they make both make funny noises.

    feel free to aim me, nejar462 im on a lot. Don't know much to warn you dudes, but im good at conversations.

    Belial in reference to Ronnie Coleman, "Some people say he still has blood in his steroid stream, but I doubt it. Gas isn't one of the side effects, but that massive bloated overly muscular freak of nature circus sideshow appearance might be what tips most people off."

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