<p>the rectangle one i don’t know how to get the exact number, but i used elimination to know that the other 4 won’t cut it in half (if you picture the lines on the graph), so -1 is the only reasonable choice. I don’t think it cut through any of the vertices though.</p>
<p>yeah II and III, when sinX = 0 and cos x = 1
the first condition was (sinx)^2 + (cosx)^2 = 2, and it could never be true because (sinx)^2 + (cosx)^2 is always 1</p>
<p>agree ^…</p>
<p>yeah it doesn’t cut through the vertices. it creates two trapezoid-like shapes.</p>
<p>yay for common sense lol</p>
<p>and the rectangle quesiton
since slope of y=x+c is always 1, and the rectangle was 4x6, the only coordinates you could have cut the rectangle with resulting congruency were at (1,0) and (5,4)</p>
<p>plug (1,0) back in
0=1+c
c=-1</p>
<p>Aw man…
2 wrong and 2 omitt so far…
:[</p>
<p>I probably made some random careless mistake…
There goes my 800 :[</p>
<p>kyoko: the line must pass through the mid point of the rectangular figure. You have the vertices, so that you can get the coordinates of that mid point.</p>
<p>For the rectangle/slope/whatever problem:</p>
<p>Wasn’t it asking for the y-int NOT the slope? You could easily change where it intercepts the triangle by changing the slope to being <1 right? I could SWEAR they were asking for the y-int, not the slope. Which in that case, it would be 0, wouldn’t it? AHHHHHH This is freaking me out</p>
<p>Catalysis – I can’t remember. I dont’ remmeber, lol. I’m soorry! I think I gave the wrong information for (I) The 2nd two are true.</p>
<p>(II) is one of those laws: (cosx)^2 = 1 - 2(sinx)^2
(III) I subbed. and stuff … and it wroked :)</p>
<p>I thought about the rectangle one, and it can’t pass through the vertices since the slope of the line is just 1, and a vertex was at (6,4)</p>
<p>same as Catalysis… ugh… i’m scared. Hopefully other ppl who took aren’t as smart as cc ppl…</p>
<p>Did you guys get an answer for the outline of the triangular prism one? I did it, and I got 162, which wasn’t one of the choices.</p>
<p>Bojangles: Yes, IIRC it was 157.</p>
<p>triangular prism: It was x^2<em>sin(theta)</em>.5*height, plugging those in you get something * sin(theta), it volume was what it was asking</p>
<p>He was asking about the surface area one, not the trough where the answer was D, 18sin(theta)</p>
<p>^same for both geometry problems</p>
<p>agree with the answer for the SA one, i tried to fold it then realized that i didn’t need to :P</p>
<p>bojangles, most likely on the triangles you multiplied 4 with 7 instead of 4 with root33</p>
<p>i did the same thing at first =P</p>
<p>Can somebody show me the calculations for the surface area one? I did it like 5 times and still couldn’t get it.</p>
<p>8<em>7+8</em>4+sqrt(33)<em>4(two triangles)+sqrt33</em>8 (middle square thing)if this is the one you are talking bout</p>