<p>yes, it was 92. </p>
<p>i don't remember what i got for the period...</p>
<p>I got pi/b how did you do the slope question?</p>
<p>Are you saying that the cone decreased proportionally? Because then it may have been 3.2, but if radius was constant(how I read it), then it was 2.0.</p>
<p>4pi2^2 (pir^2h)/3 = 16/3 pi
2pi2^2/3 = 8/3 pi</p>
<p>8/3 is one half of 16/3</p>
<p>(if this cannot be posted, delete this)</p>
<p>If it was proportionally shrunk, then I did it wrong.</p>
<p>find the height of the triangle since you know the other side and the area. the height was one so the slope was -3 (up three, across one).</p>
<p>im pretty sure it was pi/b because tan has a period of pi normally and i got -3. slope</p>
<p>any1 remember the answer for the glove question i got 7/51 i think.</p>
<p>8 ncr 3=56</p>
<p>no, because you also have 8 ncr 1 and 8 ncr 2. you have to add them together.</p>
<p>pizza toppings: wouldnt it just be 8 ncr 3... which is 56 right?</p>
<p>you can have 1 topping, 2, or 3. so you'd add the three combinations together. it's not just a matter of 3 toppings out of 8.</p>
<p>I got 7/51 as well</p>
<p>as for the pizza toppings, i got 56. 8!/3!5! or something.. i don't even know what ncr means.</p>
<p>
[quote]
Ugggh.
I thought the matrix question was asking you to multiply 2x5 and 2x4 matrices... which is impossible, so I left it blank. I thought that it was a stupid typo on the College Board's part.</p>
<p>Also... I thought that the depth of the cone was like the height? ...I guess not. That confused me. I haven't studied geometry in such a long time... ha =P</p>
<p>Whoops. I think that I got 90 for the pizza toppings one.</p>
<p>8 nCr 1 + 8 nCr 2 + 8 nCr 3.
I haven't done probability in 2 years, either, though... and completely made that up. So, I'm probably completely wrong =(
[/quote]
</p>
<p>On the matrices, IIRC, the inside numbers are the new ones. So it is 5x2.</p>
<p>just adding the combination together, i got 92. that was annoying though.</p>
<p>for the inverse, i put the tan graph</p>
<p>i also got 7/51
the inverse graph is definately the x^3 looking graph</p>
<p>okay..everyone...the answer to the matrix question was the last choice (E)...i believe that was 5x4</p>
<p>IM POSITIVE !!!!!!!!!!!</p>
<p>no, DSC, the outside numbers are the new dimesions, and the inside have to be the same. 5 x 4</p>
<ul>
<li>x^3 *</li>
</ul>
<p>though that probably doesnt make sense now.</p>
<p>=P</p>
<p>yea its 5x4 for sure</p>
<p>Anyone remember what the matrix question was? I'm now worried...
I got 92 and 7/51.</p>
<p>yup, it's definitely 5x4.</p>
<p>Blah, that Math test was harder than all the other ones I took from CB >_></p>
<p>I hope the curve is generous!</p>