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KG777
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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
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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geoffb Group TitleBest ResponseYou've already chosen the best response.0
Can you factor the polynomial? I bet one of the factors will be 2x+1. What are the other two?
 one year ago

petewe Group TitleBest ResponseYou've already chosen the best response.2
they did give you the volume
 one year ago

jbovey Group TitleBest ResponseYou've already chosen the best response.0
lol @petewe
 one year ago

KG777 Group TitleBest ResponseYou've already chosen the best response.0
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

petewe Group TitleBest ResponseYou've already chosen the best response.2
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

KG777 Group TitleBest ResponseYou've already chosen the best response.0
bingo x3, x2
 one year ago

petewe Group TitleBest ResponseYou've already chosen the best response.2
you're allowed to use graphing calculators on tests?
 one year ago

KG777 Group TitleBest ResponseYou've already chosen the best response.0
thanks you guys
 one year ago

petewe Group TitleBest ResponseYou've already chosen the best response.2
not sure if srs
 one year ago

geoffb Group TitleBest ResponseYou've already chosen the best response.0
Why bother learning how to do it when there's OpenStudy and the TI83, hey @petewe?
 one year ago

petewe Group TitleBest ResponseYou've already chosen the best response.2
are you american?
 one year ago

petewe Group TitleBest ResponseYou've already chosen the best response.2
it just amazes me how lenient the american education system is sometimes
 one year ago

geoffb Group TitleBest ResponseYou've already chosen the best response.0
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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