<p>The answer's 1/6 because they ask for the probability of selecting 2 even numbers in a row. The probability for selecting the first one would be 4/9, and for the second one would be 3/8 (as you have already selected an even number). So you get 4/9*3/8 = 1/6.</p>
<p>ahh... I missed that part of the question, thanks for the response. I got 1 wrong that I know of, probably a couple silly mistakes, and skipped 5 or 6. I think I can still get mid 700s, right?</p>
<p>Alright I finally solved the polar question! The answer IS (-1, -5pi/4).</p>
<p>I will walk you through it. Get a pencil and paper. Draw x and y axis, forming 4 quadrants.</p>
<p>The question asked which of the following is NOT equal to (1, pi/4).</p>
<p>So go the x axis and find x=1.Draw a line (u can do this in your head) extending from the origin to x=1 and rotate it counterclockwise (since pi/4 is positive; yeah it counterintuitive that its counterclockwise but hey thats mathematics for you). The point should be in quadrant I. This point is (1, pi/4) -just in case you didn't follow my jibberish above. </p>
<p>Now, the point that all of you have been claiming to be the right answer: (1, 13pi/4) was not one of the answer choices. The point actually was (-1, 13pi/4)----I distinctly remember there were 2 answers with negative x values and one of which was 13pi/4; i was deciding between both of them and randomly chose the one which had the y value as negative too (which was -pi/4). So now go to your graphs and go to the point where x=-1. Rotate the line extending from the origin to x=-1 by 3.25 pi radians. That means you actually rotate it 1.25pi (subtract 2pi) counterclockwise. GUESS WHAT? You're at the same point as the original one.</p>
<p>Now to show that (-1,-5pi/4) was the right answer. Go to your graphs again and look at where x=-1. Now rotate 5pi/4=1.25 pi radians CLOCKWISE (since we're negative). Guess WHAT? you're in quadrant III which is not equal to the original point. </p>
<p>Sorry guys for the massive initial confusion because I mistakingly thought the point was 1, pi/2. That meant that point was between quadrant 1 and 2 and that gave multiple right answers. Thanks to vorfield who reminded me that it was actually pi/4 but I'm sorry to say that his answer was most likely incorrect.</p>
<p>Cheers. And btw use a paper and pencil or else you probably won't follow my explanation. Also just to refute any further potential controversy (1, 9pi/4) is equal to (1, 2.25 pi) which is equivalent to (1, pi/4), the original point, because rotating 2pi degrees just takes you back to the original point.</p>
<p>EDIT: art_star you can start dancing now. YOU GOT ONE MORE RIGHT!! :P</p>
<p>Atomic, do you by chance know what answer choice that was?</p>
<p>no idea sorry. I'm pretty sure it wasn't D or A though. But to tell you the exact one, I have no idea.</p>
<p>Alright thanks, I think I ended up putting A or leaving it blank, I'm not really sure.</p>
<p>i specifically remember putting A...but im sure not all tests have the answers in the same order, y/n?</p>
<p>I believe all the tests have the answers in the same order...if that's the case, then I think I ended up getting it right! Only one wrong and 6 Blank, so far. I hope the curve's good, so I can get high 700s!</p>
<p>lmao oh and thank you atomicbomb for the edit statement hahaha. i do feel better! =)</p>
<p>i think that answer was A. Im fairly sure that's what i put, and i know i put A.</p>
<p>me too i definitely put A...now I'm just concerned if all tests have the answers in the same order...can someone please confirm or refute this?</p>
<p>i think they should. I'm 99% sure the -5 whatever answer was A. I think it should be the same for ur test</p>
<p>yeah i initially thought that i put the -5pi answer anyway..so hopefully!</p>
<p>i think i asked this before....but what did you guys get for the annual increase in money from 1970 to 2000? i got 3.7 something %, but i think someone else said they got 6.6%.....</p>
<p>wasn't the money increase or sth 6.67??
was there a question that had an answer 6.67??? aaargh..
The one about the tripling of the money from 1997 to 2000 or something? I don't remember what I put, but it wasn't 6.67! ._. Maybe 3.6 or something? Then again, I think I last-minute guessed that one.</p>
<p>3.73, no doubt.</p>
<p>all right good lol. i think i'm in pretty good shape so far ^_^. i omitted 5, and so far i haven't gotten any wrong.</p>
<p>i really hope the curve is better...what's the usual anyway? 43 for 800?</p>
<p>Thanks for your help vivi.</p>
<p>Darn, looks like I'll have to put more effort than I expected into this. D:</p>
<p>@the guys above...</p>
<p>I guess it was A then :)</p>