<p>definitely didn't do well.</p>
<p>skipped maybe 10-15 questions?</p>
<p>does that even add up to a 500?</p>
<p>was the answer to the cone one 1.6?</p>
<p>why were you supposed to assume the spheres weren't solid? did it say?</p>
<p>did any1 get x^2/9 + 7^2/25 = 1 for the parametric to rectangular question with sin and cos. I'm pretty sure thats the right answer because i checked it in my calculator.</p>
<p>3.2 is right.</p>
<p>i just checked the cone problem using 3ds max and it is definitely 3.2</p>
<p>so the range on that box graph was 13? right?</p>
<p>ya i put 13</p>
<p>Wait, can you explain how you got 3.2?</p>
<p>I went in without preparing at all and skipped 10, but I am quite confident of at least 37 of the others. </p>
<p>Also, how are you getting 3.2? Plug in an arbitrary number for the radius and see which answer choice worked. It's clearly the sum of the digits of the first prime double-digit number. (cryptic because paranoid of the CB coming and biting my head off)</p>
<p>wat was the answer to the last question on the martix?</p>
<p>the ratio between d and r in the new cone is the same as in the other, so you can substitute one variable in the volume equation and solve. it's pretty much exactly like related rates if any of you are taking calc</p>
<p>edit: for cone problem</p>
<p>lol. so I answered all the questions except for that slope-finding 2 line triangle area one, where I used calculus and then decided that it took too long.</p>
<p>and then I get home, and my dad laughs at me, "patty, you did it the stupid way. why didn't you turn the paper 90 degrees?"</p>
<p>and I felt dumb.</p>
<p>ratio so that d/2 = r and sub</p>
<p>matrix was 5x4 i think</p>
<p>2x5 multiplied by 5x4 = 2x4</p>
<p>the one about 99 and 100 was range. consider this. u have 99 numbers from lets say 0-50. the range is 50 right? noo matter what number the 100th one is, the range cannot go lower.</p>
<p>brucecambell: Wasn't the question like "if the V is halved, what is the new depth?"</p>
<p>my answers are :
cone : definitely 3.2
99- 100 : range
two spheres : circle and point
matrices : 4x5 ( or 5x4 i dont' remember :) )
i'm not quite sure about
5 graphs given which has inverse ? i did the tangent-looking like graph
ax5 + bx4 + cx3 + dx2 +ex + f the least nr of real roots . I put one, what is the answer ?</p>
<p>yeah it was. you find the V of the original cone, divide it by half, and set that as the new volume. Then you plug in d/2 for r and solve for d</p>
<p>3ds max is used for creating 3d animations and is great for modeling. I created a cone with height 4, and radius 2. Then i used the volume function and it said the shape was currently 16.74. I divided 16.74 by 2 and got 8.37. Then i used the scale tool to proportional scale it down until the volume = 8.37. Then i checked its height and it was 3.2. I got this question wrong on the test because i plugged 2 and 4 into the equation for a cone. Then i got the volume and divided it by two. I set the new volume = to the equation and solved for the height. I realize now thought that the new radius is not two any more so that would have to be found first.</p>
<p>ax5 + bx4 + cx3 + dx2 +ex + f had to have one real root minimum because the function could have had 1 real and 2 imaginary conjugate pairs. Also since its and odd function i believe that it has to go down infinitely in one direction crossing the x-axis. </p>
<p>the matrix answer was 5x4</p>
<p>There was a matrices question? The only one I remember was the last one. And I think that one dealt with variables.
So what's the answer for that two intersecting circle one? I put circle and point too, but others seem to disagree.</p>