Official Math Level 2 Thread

<p>where are you guys finding out the exact raw scores for 800's?</p>

<p>No, what was the answer to the double root one with k. Can you guess whether it was A, B, C, D, or E?</p>

<p>This was a specific question this Jan 26. Do you remember the answer.</p>

<p>college board books have it.
Most of the time it is 43-44. RARELY 42.</p>

<p>by any chance, could you look it up for Physics?</p>

<p>:)</p>

<p>67 out of 75</p>

<p>YAY!!!!</p>

<p>how recent is that data?</p>

<p>What was the labor question? O.o... was it even on math IIC?</p>

<p>And also I picked 8/11 for the probability question because it said greater than 1.</p>

<p>But... I can always be wrong... I have terrible English comprehensive ability. (English = my second language and I got a 650 on my CR and only a 710 on my writing XD ~ Aiming for a perfect score on ACT~ xD)</p>

<p>Yeah thats what I am thinking. Wth was the labor question?</p>

<p>Naw, im positive it said greater than or equal to. I re-read it three times to make sure.</p>

<p>i omitted three
i got 800</p>

<p>^I'm with asc3nd. I read it as greater than or equal to, too.</p>

<p>So let me estimate moi score conservatively. Let's just say I got 5 wrong. Is that a 800? No omit. How about 6 wrong and no omit? 7 wrong and no omit? 8 wrong and no omit? 9 wrong and no omit?</p>

<p>5 wrong=43.75
6 wrong=42.5
7 wrong=41.25
8 wrong=40.00
9 wrong=38.75</p>

<p>(all assuming no omits)</p>

<p>6 wrong and no omit = 43 = 800
9 wrong and no omit = 39 = 760 </p>

<p>Range: 760-800</p>

<p>Edit: Uber beat me at it</p>

<p>For the greater 7/8 and less than 4/3 one, the answer was 8/11 (i.e. 0.7272)</p>

<p>And the speed one with the guy and his wife was-</p>

<p>50(t)-60t-60 = |10t-60|</p>

<p>20legend can you explain to me how you got that answer?</p>

<p>(btw, read back 2-3 pages)</p>

<p>Dear llewis999,</p>

<p>You are wrong about f(x)=x^5-3x^3+x=0 not having the same roots as f(-x). The obvious reasoning here is to factor out a -1, and dividing by both sides since the right is simply 0. Your theory that dividing like this is incorrect is preposterous: I just inputted both equations onto my calculator, used the solve function, and got the same roots (TI89) to confirm. Good day, sir!</p>

<p>Well, I'm not a 100% sure, but here goes:</p>

<p>7/8 = 0.875</p>

<p>So now, from .875 to 1.000, there are 125 possible choices .. (0.876,0.877 and so on ..)</p>

<p>4/3 = 1.333 (Ignoring the remaining '3s' because the other fraction has just 3 decimals)</p>

<p>From 1.000 to 1.333, there are 333 possible choices, all GREATER than 1, i.e. 1.001, 1.002 and so on ....</p>

<p>Probability = Favorable outcomes/Total possible outcomes</p>

<p>Favorable outcomes = 1.000, 1.0001 to 1.333. Which equals 334 numbers.
Total possible outcomes = 125+334 = 459</p>

<p>334/459 = 0.726688</p>

<p>8/11 = .727272</p>

<p>So, I guess(hope ;)) that's right ..</p>

<p>hmm thats weird. That method actually gives you 8/11.
I use a similar method but get a different answer of 3/4::
7/8 = 21/24
4/3 = 32/24
24/24 = 1, so 24, 25, 26, 27, 28, 29, 30, 31, 32 = 9 numbers
21, 22, 23 = 3 numbers</p>

<p>Probability = Favorable outcomes/Total possible outcomes</p>

<p>9/(9+3) = 9/12 = 3/4</p>

<p>Bah. Quite a dumb question if you ask me. It would be quite outrageous if my answer's incorrect because I converted fractions into decimals. <em>lol</em></p>