Jan 2008 Math

<p>it was y < 0, i think.. unless you are thinking of a different question</p>

<p>nope, it was the one with y + x > y - x</p>

<p>I am 100% sure that was the problem because I remember doing the plug-ins, but then again I could be wrong</p>

<p>I think this is the one you are referring to</p>

<p>x + y < x - y</p>

<p>The answer is y<0 because when you subtract a negative, you are really adding it. When you add a negative, you subtract. That would cause the right side of the inequality to be greater, which matches the sign.</p>

<p>Oh, I just copied the problem from earlier in the thread, I don’t remember exactly what it was. you could be right.</p>

<p>no, it was x + y < y - x. the answer was x<0</p>

<p>it was x+y<y-x. I’m positive about it because I put x<0 and was sure I was right. (my heart skipped a beat a minute ago when someone said it was y<0 and I thought I was the only one to put x<0 and that I was wrong somehow!)</p>

<p>^second that</p>

<p>^ I third that. Even I got x < 0 and I am confident about it.</p>

<p>i 4th that</p>

<p>Does anyone remember the other I,II,II question?
it was something like (x+y)squared + (x-y) squared or something… and choices were x has to be odd, y has to be odd , xy has to be odd, x+y has to be odd.. I might have written the question completely wrong but I know I put x+y as my answer. Does someone remember the question? can you write the solution too?</p>

<p>There were two correct statements, I remember.</p>

<p>x had to be odd and x+y had to be odd</p>

<p>^to make x(x+y) odd.</p>

<p>^ I agree. It was x<em>x + x</em>y = x(x+y) and it had to be odd. Only way is when both are odd. (if you can’t figure that out, just pick random odd and even numbers and you’ll see the pattern)</p>

<p>Was the section with the shaded squares divided into fourths experimental?
I hope it was, because I put 1/128 and everyone else seems to be getting 1/256…</p>

<p>^ I didn’t get the Math experimental and I don’t remember putting 1/256 or anything like that as answer.. So I guess IT was experimental.</p>

<p>Yeah, I never got that question…</p>

<p>Neither did I.</p>

<p>Me neither. I had experimental CR (bane of my existance)</p>

<p>if i got like 5-6 wrong do i have a chance of breaking a 700</p>

<p>Hey when you guys say experimental… is it like a whole section that is all experimental or just a couple or questions? D:</p>