<p>did it involve spheres? i swore i got 4</p>
<p>Well i got nearly everything else correct but for that one idk</p>
<p>its 2 for one radius and 4 for the other radius
so (4/3)pi4 is 5.13333
and (4/3) pi is 21.333333</p>
<p>21.333 divided by 5.13333 is 4 right? maybe i read the problem wrong :(</p>
<p>If i get a grid-in wrong and one mult choice wrong my raw score is 51.5, do they round that to a 52? which is like 760ish right?</p>
<p>yes^</p>
<p>--
they gave u the formula
it's actually (r)^3, the 4/3PI can be disregarded, cuz division.
now u try pluggin again =P</p>
<p>Naomi, that's not even the formula for the volume of a sphere.. sorry :(</p>
<p>^Do you guys remember the paperback or hardback one?
I got three for that one. It was something to do with paperback d, hardback 2d and then how many were paperback. </p>
<p>Do you guys remember any of the hard 16 Q answers?
I had to push myself to finish that one, speeding up, but still had 2 minutes left.</p>
<p>Yea, 3 for the 7d one. </p>
<p>I don't know about any other hard questions... i don't even remember what was on the last math section bleh</p>
<p>^lol, that reminds me,yeah i almost freaked out on that Q, i went the dummy way by plugging in 1 s 2s and 3s lol.
the hard 16 q's .. hmmm yeah there was one with the -f(x)=f(-x) one</p>
<p>OOoooOoh yeah that section.</p>
<p>x^3 + x definitely for that one.</p>
<p>Then there was the 6<rootn<10</p>
<p>99-37 = 62 <-- answer.</p>
<p>And there was the equilateral triangle on i think. 9 times area increase if each side is increased by 3x.</p>
<p>the question said all the teams had even amounts of people on it and no one was left over, so it must have been 11. i read it wrong the first time, so i'm positive 11 is correct (i spend a lot of time thinking about it haha).</p>
<p>aw cmon the -f(x) one was so easy, i don't think it ranks as a hard Q</p>
<p>i don't remember any hard ones from the 16 Q one, i finished with 5 mins to spare on that section.</p>
<p>i should be remembering something!!</p>
<p>^ now that makes me feel bad LOL. i think that's the only i missed; and whats more interesting, after the testing room, i told my peers that i got it wrong(i solved it in head after section 10 =[ ), they all got it wrong too LOL!</p>
<p>hey, sorry if i insulted you on that last post...totally didn't mean to</p>
<p>i guess it was hard after all,
if most people didn't get it.</p>
<p>for that -f(x) question, I just graphed each problem, and see which two graphs were the same.</p>
<p>OMG srry junshik, but you overanalyzed that WAY too much</p>
<p>all you gotta do is multiply the expression by -1 </p>
<p>and then plug in -1 for x and see which ones are equivalent</p>
<p>remember that you can eliminate anything that is to an even power.
o_o
which ones leaves equations.
x^3+1 and x^3+x</p>
<p>then you can do the math, shouldn't take more than 10 seconds.</p>
<p>did the 6<rootn<10 question say rootn or n was an interger?</p>
<p>if n, then 62 is the answer</p>
<p>if rootn, 32 is the answer</p>
<p>rootn is an interger so highest is 81 and lowest is 49
81-49=32</p>
<p>I put 62 as the answer... this question has been troubling me all day.</p>
<p>yeah, i quickly crossed off all the even power ones. then i looked at how one of them was x^3+4 and I thought it just couldn't be right for some reason, so I went with x^3+x, it just looked right to my brain for some reason haha.</p>
<p>october the answer was 62. im positive. breath easy.</p>
<p>which question was the -3 answer??</p>
<p>i dont remember answering that =[</p>