January 2010 Math thread

<p>I got band = 72 also.</p>

<p>Circle/right triangle was the one with the radii as the bases.</p>

<p>What would I get with 1 wrong grid-in and 1 wrong multiple choice?</p>

<p>wat was the question pqrs that had the answer 8. can somebody plz write it i think i put 8 but i need to see it cuz im not sure. and its definitely 4 paths</p>

<p>12 in one group 15 in the other, 11 in only ONE group (not in both groups), how many in both groups?
So you get 27-11=16, then 16/2=8</p>

<p>8 in both groups definitely. somebody plz repeat the pqrs line question</p>

<p>I’m pretty sure that was a math grid in?</p>

<p>what was the answer to the question about 2 triangles that overlapped. It was looking for part the length of a segment of the smaller triangle.</p>

<p>PQRS are points, collinear, and you work it out to 6 between each point.
X is between Q and R, and it is 4 away from Q. What is XS? So it’s 2+6=8</p>

<p>Can someone explain the one with the sphere inside a cube one? I really don’t understand it.</p>

<p>il make it easier to understand. take a square and a circle. if a square has a diameter of 2, then the largest diameter of a circle that can fit in it is one with a diameter of 2, because otherwise part of it would be outside the cube. so, once you understand that, you just have to think of it from all 6 dimensions</p>

<p>i really dont remember the pqrs question if i put 8. i think i did but. wasnt it like pqrs r on a line and they are equally spaced from each other, and if x is between q and r, how far is it from s?</p>

<p>because it said integer…</p>

<p>i think my question is howd u guys come up with 6 between each point</p>

<p>

</p>

<p>It was a line of length 18 divided into three equal parts.</p>

<p>wow, i dont even remember that at all. i’m an idiot i better have put 8</p>

<p>P — Q — R — S</p>

<p>3 intervals, which are represented as —s</p>

<p>Anyone have a consolidated list of answers?</p>

<p>what was the question for “f(0) + f(a) = f(a)”? I dun remember this one…</p>

<p>They gave you a graph and it was like
Which of the following must be true?
And f(0)=0 so that was the correct answer.</p>

<p>ehh…was it the one with a V-shaped graph?
do you remember other choices?</p>

<p>f(a)+f(b)=f(c) or something like that
i don’t remember because right when i saw A i was like “Yeah that’s the right answer” and i moved on</p>