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    Payback Exercise - HELP!!?

    BOOK: Economic Engineering 6th edition Chapter: 5 Case Study – Payback Evaluation of Ultralow-Flush Toilet Program Help me solve this exercise please! you are right, is just that my book is in another language, is not english.. let me try...
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    Help me please - Payback exercise?

    BOOK Economic Engineering 6th edition Chapter 5 Case Study –Payback Evaluation of Ultralow-Flush Toilet Program Help me solve this exercise please!
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    Domain of this function?

    What's the domain of this function? f(t) = -9t / t + 8 t + 8 IS the denominator
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    Awesome Photoshop illustrations?

    I have seen beautiful photoshop illustrations of women, fairies, landscapes, etc Here is an example: It´s simple AMAZING! My question is, people that draw like this at photoshop, can also do the same with paper and pencil? because I dont draw like this but I am wondering if I could do if...
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    Will eating apples while drinking alcohol...?

    ...ruin your buzz? I heard that the best way to get extremely tipsy is to drink on an empty stomach, but will eating apples ruin that?
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    Is water polo THE most intense sport ever?

    I have tried water polo and i can say that it is definetly intense, you really work every aspect of your body. Teamwork is essential and communication is a must. as for it being THE most intense i am not sure. i would tend to say that Rugby might be qualified as the most intense sport in the...
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    How To Shift a Car if its an Automatic?

    Drive 1, Drive 2 and Drive 3 are the equivalent of gears in an automatic car..lets say you are cruising at D3 and you wish to slow down, all you have to do is go down to D2 while applying a little bit of brakes and voila! but they are really not that useful most new cars dont even have D1,2 and...
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