<p>But I'm pretty sure that 3<x<4 wasn't part of the answer choices.</p>
<p>llewis: there was only one equation that had all odd powers. The rest had both odd and even. Thus, it was the only answer that a -1 could be factored out. I'm 100% positive.</p>
<p>Just plotted (x+3)(x+4)(x-1)(x-2)<0 on my graphing calc.</p>
<p>The answer is either</p>
<p>-4<x<-3 or 1<x<2</p>
<p>Maybe, but how could I have just typed it wrong? 20Legend says he got the same thing as me.</p>
<p>20Legend, how did you get the answer to the f(x)=f(-x) one?</p>
<p>I thing I went for 1<x<2 :S...</p>
<p>@lewis:
Umm, just substituted -x for x in the given function ...</p>
<p>When you substituted it, you got the same exact equation, right?</p>
<p>I don't quite remember that question ... :( ..</p>
<p>But I guess I did ..</p>
<p>Ohh, what was the answer to that "3 planes intersect ..." question ?</p>
<p>Point and Line</p>
<p>Damnit. Went for just line.</p>
<p>How can three planes intersect at a point though ? :S:S</p>
<p>There's an explanation some pages back.
Think of it like the xy, yz, and xz plane. They're all mutually perpendicular and only intersect at (0,0,0).</p>
<p>by the way, the probability problem said ALL REALS im very sure of this.
here are some problems i got off my calc...</p>
<p>1) which acute angle 'solves' the equation...</p>
<p>Sin(5Pi/12-X)=Rad(2)/2
answer: Pi/6</p>
<p>2)Which is the solution set to |X^3-5|<8
Answer: -1.44225<X<2.35133</p>
<p>3) If X^2 + y^2 = 12.85 and XY= 5.58, what does (X+Y)^2
answer: 24.01</p>
<p>4) This question had one side of a triangle and two angles and asked for the measurement of the third side...
answer: 11.0148</p>
<p>5) The graph of Ln(X^2) and you had to find the area of three rectangular sections...
answer, 21.03</p>
<p>6) The distance between city A and city B was...
5.8217</p>
<p>7) Sin (X)= X^2, 0 <x< pi/2
Sin (2X)=?
.983365</p>
<p>Is it possible to still get an 800 with 3 omitts and 2/3 wrong? And is it sane to retake if I get a 790?</p>
<p>mATHinitup, all correct I think. Except I don't remember the last one ..</p>
<p>Take a look at your average Cartesian coordinate system. Three planes, one common point, the origin.</p>
<p>mATHinitup, was pi/3 an answer choice for that last one?</p>
<p>Yeah I don't remember the sinx=x^2 one either:S</p>
<p>Xiex:
3 omits 2 wrong = 45 = 800
3 omits 3 wrong = 43 = 800
Hopefully you only got 2-3 wrong ;)</p>
<p>1) which acute angle 'solves' the equation...</p>
<p>Sin(5Pi/12-X)=Rad(2)/2
answer: Pi/6</p>
<p>I don't really remember this question. Do you just punch in calculator two equations and then find intersections? XDXD</p>
<p>And for the last one, isn't it just double angle identity? 2sinx square root something something something...</p>
<p>I just remembered this question.</p>
<p>If two lines are perpendicular to each other, then the multiplication of their slopes would equal -1.</p>