October 25, 2008 ACT Discussion- Math

<p>the exponential graph one was my 3rd to last question. after it, i had one about a pentagon and another about something else. can't remember</p>

<p>According to my December test, this is the breakdown for the scores. Note that this is a rough approximation because all curves are different.
-7 is around a 32
-6 is around a 32
-5 is around a 33
-4 is around a 34
-3 is around a 34
-2 is around a 35
-1 is around a 36</p>

<p>what was the answer for the one with 64^a=1/something^a+1..... arghhh I rushed through that problem..</p>

<p>collegepanic it was -3/5</p>

<p>Missing 4 for math: 32ish
Missing 5-6: 31</p>

<p>(From ACT for Dummies book)</p>

<p>"-5 is around a 33
-4 is around a 34"</p>

<p>I hope that's right - a 33 in math and I might still have a chance at my 35. Yikes.</p>

<p>the 64 one - maybe like 3/5?
it was 16^a = 1/(64^(a+1))</p>

<p>maybe not 3/5, it was like a negative fraction, i think</p>

<p>i think it was one of the fractions, but negative.</p>

<p>16^x=1/64^(a+1)</p>

<p>i think it was -3/5</p>

<p>it was -3/5</p>

<p>rjacob, did you change your mode from radians to degrees? it makes a great difference..</p>

<p>also what was the trapezoid? i coulnd't figure out a way to find the sides. i picked 44 (C). it was either that or 42...</p>

<p>I agree with rjacob. I remember putting that down.</p>

<p>trapezoid one - the height was 12, each of the parallel bases was 4 and 14, each of the non-parallel sides was 13,
so 26 + 4 + 14 = 44</p>

<p>perimeter of trapezoid was was two 5-12-13 triangles plus the sides given. The sides were 13+13+4+14=44</p>

<p>what was the one that had sqrt c^2</p>

<p>i think it was 3. because square root of -2,-5,pi and 1/2 are irrational?</p>

<p>they were asking for an integer.</p>

<p>i didnt have the same test questions as you guys.but do any of you know which of the following could NOT be used to interect a plane and a cone in 3D</p>

<p>one point,two points, parabola, circle, ellipse</p>

<p>1/2 is rational though
i still put 3</p>

<p>1/2 isn't an integer though. Tricky question.</p>

<p>lakers - I think it's an ellipse.</p>

<p>lakers, that sounds like a tough question. good thing i didn't have it.</p>