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Everything posted by Dsanders
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I really hate writing these kinds of blogs, but in the state I'm in, I need to free my thoughts and feelings. I just feel like absolute crap right now. http://mlpforums.com/blog/1134/entry-14179-math-and-depression-along-with-some-of-my-thoughts/
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*sighs* I have to take elementary algebra for the next two years. That assessment test was poorly laid out and despite studying a lot of Geometry, there was hardly any questions about that on the test. I studied in all the wrong areas ... complete bullcrap. FML
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Well the last problem makes sense now. Thanks for the help. Is the "multiply by numerator and divide by denominator" rule applicable for simplifying any multiplication problem involving a fraction and whole number? For example, would the same method work if it was 5/9(67)? That would equal 37.2 and that would be correct right?
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Multiplication is just a list of factors. Some of those factors can be inverses (or parts of a whole). The denominator of a fraction usually collects all those inverses under the division bar, and all the non-inverted numbers (wholes) over the bar. So 5/9×67 is (5)(/9)(67). And as long as multiplication is commutative, you can reorder those factors whatever you please, eg. shift all inverses to the end of the list: (5)(67)(/9), which is 5×67/9.
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67 is prime, so you cannot factor it any further, and the fraction 5×67/9 or 335/9 is irreducible. But 9 fits into it 37 whole times, so you can put it as (9×37 + 2)/9 and then split as 9×37/9 + 2/9 which is the same as 37×9/9 + 2/9, and this simplifies to 37 + 2/9 (37 wholes and 2 ninth parts of the remainder). If it were 2/10, then you could write 37.2, but since it's 2/9, it is actually 37.222222... or 37.(2) (a repeating decimal).
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I have an assessment test to take tomorrow morning. Studied a bit today at least. Wish me luck! Especially on the ... math O_o
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Is that link you have on your sig legit? I am tempted to join for I am desperate for more money xD
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What a mess I got myself into ...
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How does one prepare themselves for a test, without having studied, on just the day before?
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I guess I'm doomed for the college placement test that I have to take tomorrow. I regretfully didn't study much at all during this vacation. The only section I'm worried about is the math. There is no way I can prepare myself with enough by then. *sighs*
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Hmm... It might take a bit, I'll post them whenever I remember another but for now let's see.... The example I gave was like: (^ <- Exponent comes after)
X^3 + 10x + 16 = (X + 8) (X + 2)
I think it was called the parenthesis function or something, not sure about the name.... But we're going back over it in a college-ready math class so...
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