May SAT 2011: Math Section

<p>…</p>

<p>I think i got an 800 as well as long as it was 165. @prattennis_1 the answer was the one that opened downwards and by your description, probably C</p>

<p>vatech12. do you plan on going to tech or just a fan?</p>

<p>@sweetpuri
same…</p>

<p>and regarding the y=40 triangle question…
i wrote it all out to my memory on page 20 of this thread and i got 25, work is explained, i dont see any way its close to 10… maybe its a different question, could someone go look at it on page 20 and tell me?</p>

<p>@qwerty-- i’ll have a look at it, but I remember putting 30. let me give my reasoning here. </p>

<p>y = 40, angle to the far right was 30 degrees, so the angle to the left was 110. supplementary angle makes the angle on the other side of 110 –> 70, and since it was isosceles it was 70 on the far left angle, leaving us with 40 at the top of triangle left.</p>

<p>…_
…/\x_
./…_ (staircase thing is supposed to be a line…)
./…_
/<strong>|</strong>___<em>y</em>&lt;br>
I didn’t really look over your work but I’ll explain how i solved it. They gave you Y= 40 and the fact that the sum of x and the angle next to x has to equal 90. So, you figure out that the bottom left angle is 50 and the angle right of that also has to be 50 because their corresponding lines are equal. This means that the top angle must be 80 and since x and the angle left of x has to add to 90, x=10. Sorry if that didn’t make much sense</p>

<p>I’m pretty sure my experimental section was a math one, but I’ve no idea which one it was. Can anyone name one or two easy to remember questions from the math experimental? Thanks very much!!!</p>

<p>answer is 10…god its math not CR stop arguing.</p>

<p>the answer to the question with the venn diagram was two, right?</p>

<p>

I believe it was 3.</p>

<p>A was (2,3,4,5) and B was (2,4,6,7,8) or something. A was unshaded and B was shaded, and they asked for shaded so 3.</p>

<p>it was 4 i think… 1 and 2 were in the middle.</p>

<p>Qwerty is right.</p>

<p>The answer asked for the smallest number, and the smallest number you can make from those equations is -1. -1<(any negative fraction). Plug in -2 for “n”.</p>

<p>1/((-2)+1) = 1/-1 = -1</p>

<p>1/(n+1) is right.</p>

<p>ya i think it was 4 but that seemed pretty easy that it didn’t really stick</p>

<p>I’m pretty sure the answer to the Venn diagram was 3…</p>

<p>Um, what score would someone predict a -3 corresponds to?</p>

<p><a href=“http://www.erikthered.com/tutor/SAT-Released-Test-Curves.pdf[/url]”>http://www.erikthered.com/tutor/SAT-Released-Test-Curves.pdf&lt;/a&gt;&lt;/p&gt;

<p>3*(-1.25) + 54 = 50.25 raw.
So 710-740?</p>

<p>the venn diagram was either 3 or 4. not sure which one but it was pretty easy so i’m assuming i put the right one.</p>

<p>to clear up confusion, the geometry answer is x=10, i’m 100% sure of that</p>

<p>also, i mentioned this before but n=135, i’m 100% sure of that as well</p>

<p>f***… no!!! i think i got the wrong two lines congruent… -_-
i hate the sats… never better than -2 and always on errors in reading the questions…</p>

<p>Weihao, I will forever worship you if that’s true - and also if I am not mistaken in my believing these were my only mistakes :P</p>

<p>Anyway, thank you very much, and good luck to both of us :)</p>

<p>"Nspired, nope. It was solving for k.</p>

<p>2x^2 + 4x + k (or something; the middle coefficient may be off)</p>

<p>with “exactly one answer for x”</p>

<p>options:
a. 2
b. 4
c. 8
d. -2
e. -8</p>

<p>or something hahah, i got -8.</p>

<p>ANYONE ELSE!?</p>

<p>basically you want, when you do the quadratic formula, to get the sqrt to be zero, right?
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<p>can anyone remember the full qn for this?
i’m pretty sure i didn’t use the sqrt(4-ac) = 0 if thats what you are talking about. are you saying we needed to find when the determinant equals zero? that seems a bit hard for sat 1 math…</p>

<p>@Smacking
Same :smiley:
I’m worried that I missed more than the ones I accounted for so far, though.</p>