Math Level 2 - October 2014

<p>@AnotherPSEOKid‌ thanks! You too! </p>

<p>I omitted 4 and got 2 wrong. Do you guys think that I should cancel this score and retake if I am aiming for 800? I know 44 raw score usually equals 800, but my only concern is that I might’ve made one or two mistakes on the day. Do you think it is impossible to get 800 with a raw score of 42 (in this test)? I personally found this test just as difficult as Barrons’.</p>

<p>Does anyone remember if the ellipse problem finding the major/minor access (whose answer was 2, sqr(4/3)) had a answer option that was (2, sqr(3/4))? I found that answer in my calculator when I was clearing it today & I’m freaking out now b/c I don’t know if I put the right answer or not.
Alternatively, do you remember if (2, sqr(4/3) was A, B, C, D, or E?</p>

<p>The answer was definitely 2, 4/sqrt(3)</p>

<p>2, sqrt(16/3) is also correct but it was not among the choices. </p>

<p>It was most likely choice B or C, but to be very honest, there’s nothing you can do about it at this point, and speculating to the contrary would be counterproductive.</p>

<p>do you remember if that was A, B, C, D, or E?</p>

<p>yeah I know TTTT, thank you!</p>

<p>The answer was (x+y)/2=n^2 . I saw some people saying that it was y/x=n^2, but I don’t see how that can be right.</p>

<p>I wonder how lenient the curve will be… hoping for 43 = 800 (or even 42 but I don’t know if it’s ever gone that low?)</p>

<p>Can you tell me that candel question to me? I don’t really remember what it was asking for</p>

<p>It was asking for the intensity at 36 candles or something? Like it gave you the formula for intensity & what it was at 144 candles and you had to solve for k and plug back in to find the answer </p>

<p>For some reason I never remembered that question… Well now I do. Was there a trick in that question? What was the correct answer to that? 10 or 100?</p>

<p>I think the trick was just remembering to take the square root since it was d^2 in the equation. And the answer was 10. </p>

<p>10</p>

<p>For the sin(phi=sin(theta question, was phi + pi a choice. I may have selected that one I chose the 2nd answer (B) Im not sure if that was pi-phi or phi+pi </p>

<p>What is the integer question exactly? x is the square of an integer
y is the square of an integer ?(is it) which one of the following equals n squared if n is an integer? was it something like that?</p>

<p>And by the way - adding a number to each data does not change the standard deviation therefore the change in standard deviation is zero if that was the question </p>

<p>moi aussi!!! I didn’t even know there was a google doc o-o</p>

<p>Guys, I’ve made some horrible mistakes.</p>

<p>I didn’t have a graphing calculator…
remember the question which asked how many times does this graph cut the X-axis? Well I got out and remembered that just putting Y=0 would give you an equation in terms of X. Solving it will give me the number of solutions, i.e. if it’s a quadratic- probably 2 solutions!</p>

<p>I guessed 0 though- the graph never cuts the X-axis.</p>

<p>Another mistake I made- just plain stupid.</p>

<p>I knew I had to find 2*3 = 6’s multiples but I just jumped at the option with the probability of 2’s multiple. I seriously don’t know why I did that. I’m so stupid. :(( </p>

<p>not having a graphic calc = fatal error.
2 solutions was correct</p>

<p>The answer to the squares question was y/x=n^2.</p>