<p>Let the discussion begin!!!!!!</p>
<p>it was hard that is all</p>
<p>I am in love with my calculator after going through that hell</p>
<p>any one remember any weird questions???</p>
<p>I skipped 5, and definitely figured the last one out right when he called time.</p>
<p>watd u do? wat was the question again?</p>
<p>i skipped 10, and idk how many to count wrong...4? wat would that get me? >700?</p>
<p>wat is the intersectino of 3 planes? i said all, rap, line and point? right?</p>
<p>ray*, not rap</p>
<p>I didn't think it was ray or line because they don't end..</p>
<p>neither do planes though</p>
<p>I thought only point and line could be formed because rays donot have terminating points, right?</p>
<p>no, because a plane can go on forever too</p>
<p>for the question about the two door cars? u just multiplied the two probabilities right?...i forget any other details</p>
<p>yeah you multiply them and get 3/20: 0.5 * 0.3</p>
<p>good..i suck at probability</p>
<p>anyone figure out the question about the right circular cylinder(or was it cone??), and increasing r by 25% and h by 50%? it asked, wat is the new volume, and old volume was 16</p>
<p>I (cough---my calculator---cough) got the answer correct I think, but no idea how I did it lol</p>
<p>I didn't bother with that one, they didn't list the cylinder formula so I just skipped it.</p>
<p>
[quote]
watd u do? wat was the question again?
[/quote]
</p>
<p>it was something like sin theta = x^2, what is sin 2theta.</p>
<p>You use double angle formula to expand it, solve for cos theta with one of the pyth identities with a square root over it.</p>
<p>edit: I forgot the pyth identity was suppose to be cos and sin squared so I got stuck there.</p>
<p>For reference V of cylinder = pi r^2 h </p>
<p>Skipped the sine theta thing.. I think. Gosh I dont even remember which I did and which I skipped O.o</p>