<p>oh thank god, I thought I was doing horrible since I skipped like 6 questions and guessed on 4 or 5. And I'm also glad I got the amplitude question right. Trusting your first instinct does help sometimes.</p>
<p>hold on how can the three planes form a line? I put point only. If you have one plane, you have a plane. If you have two planes(x and y) any way you put them a line will form where they meet. If you have 3 planes a line is impossible to form, only a point. Look at a corner of your walls, where they meet is a point, if you you look for a line, then only two walls are involved. Correct me if im wrong.</p>
<p>If you insert a plane between the edge of your wall, the edge of your wall is a line created by the intersection of the planes.</p>
<p>imagine the 3 planes like pages in a book... they could all be slightly angled and meet at the binding to produce a line</p>
<p>did anyone get the question with the circle of radius 12, and the pin 13 inches away from the circle? how do you solve that?</p>
<p>crap they weren't talking about x, y , and z planes were they, just any three planes. oops</p>
<p>janeite: it should've been the answer that was in the mid-70s. you find the circumference of the circle of rad. 12, and then you find the circum. of the circle of a rad. 12.5 (which is assuming that the entire circle stretches and not just that one part). The answer should be between those two circumferences.</p>
<p>was there only one answer that had 7 as the first digit?
i think i actually put that one</p>
<p>(sigh) This test MURDERED me. I've always had serious timing problems to begin with, and even CC-normal people (CC-normal = people who scores 800s with 10 minutes to spare on the practice tests) had trouble. To make things worse, I didn't even put C/D for any of the ones at the end that I didn't have time to get to - but then as soon as the buzzer rang, I realized that I should have. (goes to book her seat for the November test - at least it'll just be the Math II this time and nothing else)</p>
<p>"was there only one answer that had 7 as the first digit?
i think i actually put that one"</p>
<p>Yeah, I think so.</p>
<p>that's awesome!
oh did you guys get 24pi for the cylinder surface area one???
or was it 30pi...
i put 24pi</p>
<p>it's 30pi because it's 2"pi"r^2+2"pi"rh</p>
<p>omfg... that's what i thought
and then i decided it was pi r h</p>
<p>For the question with the circle of r=12 and the string, wasn't the answer something like 69?</p>
<p>I found the circumference of half the circle:</p>
<p>12pi</p>
<p>And then the other half formed two 12,13,15 triangles. </p>
<p>So 12pi + 30 = ~69</p>
<p>The string doesn't cover the entire circle, so you can't just find the circumference of the whole thing, right?</p>
<p>Oh, damn. Didn't think of that. Well, there goes that one :)</p>
<p>how much is a 39 to 41 for this test? I'm so screwed...</p>
<p>Even though the other half of the circle forms 12, 13, 15 triangles, that doesn't account for the length of the arcs of the circle that the string still runs over. It makes it quite assuredly greater than 69.</p>
<p>3 blank & 4 wrong on this test would amount to what score?</p>
<p>@Beautiful in Chinese, 790 to 800.</p>
<p>boo. i was really stupid and did the question wrong. i found the angle the thing makes and i solved for the circumference of that sector instead of the actual circle. wow that was really stupid.</p>
<p>-1.</p>
<p>+skipped a lot.</p>