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KG777 Group Title

Ok so this is so confusing The volume of water in a rectangular swimming pool can be modeled by the polynomial 2x3 − 9x2 + 7x + 6. If the depth of the pool is given by the polynomial 2x + 1, what polynomials express the length and width of the pool? Why couldn't they just give me the volume?

  • one year ago
  • one year ago

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  1. geoffb Group Title
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    Can you factor the polynomial? I bet one of the factors will be 2x+1. What are the other two?

    • one year ago
  2. petewe Group Title
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    they did give you the volume

    • one year ago
  3. jbovey Group Title
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    lol @petewe

    • one year ago
  4. KG777 Group Title
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    If I was to graph it into a calculator would it show the numbers as roots touching the x axis at 0?

    • one year ago
  5. petewe Group Title
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    divide 2x3 − 9x2 + 7x + 6 by 2x + 1 and you'll be given a quadratic. factor it to find the other 2 dimensions

    • one year ago
  6. KG777 Group Title
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    bingo x-3, x-2

    • one year ago
  7. petewe Group Title
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    you're allowed to use graphing calculators on tests?

    • one year ago
  8. KG777 Group Title
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    yes

    • one year ago
  9. KG777 Group Title
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    thanks you guys

    • one year ago
  10. petewe Group Title
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    not sure if srs

    • one year ago
  11. geoffb Group Title
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    Why bother learning how to do it when there's OpenStudy and the TI-83, hey @petewe?

    • one year ago
  12. petewe Group Title
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    are you american?

    • one year ago
  13. geoffb Group Title
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    Me?

    • one year ago
  14. petewe Group Title
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    no, KG777

    • one year ago
  15. petewe Group Title
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    it just amazes me how lenient the american education system is sometimes

    • one year ago
  16. geoffb Group Title
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    I'm in Canada, and it doesn't seem to be much better here. I took grade 12 math and calculus years ago now, but even then there were graphing calculators. I'm pretty sure they were allowed to be used on the finals. I was the only kid in the class without one (couldn't afford it), but I did the best in my class on the final. Knowing the fundamentals of how to do things is so important, and you're right—it seems it is being lost.

    • one year ago
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