June 2009 - Mathematics Level 2

<p>@rickymatsui - I sure hope so. I did much worse than on all the practice tests, I think.</p>

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<p>I used the law of sines and got an answer that was an answer choice. I believe it was 4.xx.</p>

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<p>That is correct.</p>

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I got 10,080.
If you use the basic combinations principle you get 6<em>5</em>8<em>7</em>6.</p>

<p>is 43/50 an 800 usually?</p>

<p>43 is an 800 if it is a more lenient curve – we have no idea if CB thought this test was hard or not</p>

<p>For similar triangles it should be:
sqrt(2^2+6^2-(2)(2)(6)(cos42)
=7.04</p>

<p>when i took it last june i believe i got 5 or 6 wrong and got the 800</p>

<p>yea i also got 10,080…order does not matter</p>

<p>SO:</p>

<p>There are 8 seniors and 3 positions= 8x7x6=336
There are 6 juniors and 2 positions=6x5=30</p>

<p>So, 336x30=10,080</p>

<p>Can someone please tell me what I did wrong?</p>

<p>sooo… it is legal to discuss the test in “general” terms even if not specific right…?</p>

<p>anyway, so i came out of the test feeling decent (4 omit) but now i think i missed like 5-6. what score is that approximately?</p>

<p>gah… hate stupid mistakes :frowning: i can’t remember all of my answers tho, so maybe i didn’t get all of them wrong :)</p>

<p>@ vinvam: Combo principle: nCr = n!/[(n-r)!r!]</p>

<p>:/ i was mistaken.</p>

<p>how tall was that thing where it stretched to 6 feet above the guy’s head. what was the answer for that one.</p>

<p>Seniors: 8 choose 3= 8!/(3!(8-3)!)=56
Juniors: 6 choose 2=6!/(2!(6-2)!)=15</p>

<p>15 x 56 = 840.</p>

<p>You used permutations, where order DOES matter.</p>

<p>damnit… i forgot to add the guys height to the final answer
:(</p>

<p>i used mcgraw-hill, but only did 3/9 tests :/</p>

<p>I only took one test.</p>

<p>@chocorain
law of sines fixes it. I don’t know the numbers.</p>

<p>From what I inferred, order doesn’t matter, Bell… Because there’s no “Pres” or “V.Pres”, just two juniors and 4 seniors.</p>

<p>Oh well. If I’m wrong on three questions, so be it. :expressionless: (I forgot to add the height too, ***/stupid mistakes)</p>

<p>hmmm… retake for sure… Hopefully i got around a 750.</p>

<p>“when i took it last june i believe i got 5 or 6 wrong and got the 800”
was the test hard?</p>

<p>height was like 54</p>

<p>Bell Curves, you are right.
gahh…</p>

<p>^ 54 10char</p>