<p>"xy=3</p>
<p>(x+y)^2 = 10"</p>
<p>I don't remember if this is the exact equation, but if you substitute and use pythagarous I think you get a neg # in the square root...</p>
<p>Well, I think we've gone through most of the harder questions. I think I did OK because it seems I missed only a couple, but I still do have the retake in December open.</p>
<p>Does anybody remember any more answers from the prose fic passage? I don't know why, but this one seemed to be the hardest for me.</p>
<p>Took the act and it felt about the same as the time I got 32, although I got my SAT IIs back today and am very sad to find that I got:
640 Math IC
700 Writing
660 Chem</p>
<p>Uhh.. I think that was the exact question.</p>
<p>x^2+2xy+y^2=10
(substitute)
x^2+y^2=4
Infinitely many?</p>
<p>"Uhh.. I think that was the exact question.</p>
<p>x^2+2xy+y^2=10
(substitute)
x^2+y^2=4
Infinitely many?"</p>
<p>I don't think so...</p>
<p>Well, I've already missed one math.. If I miss this one.. ..</p>
<p>damn it..</p>
<p>try plugging in numbers...can you up with any? i couldn't...so i just put 0...</p>
<p>what was the (-1/2)^a question....where a makes the number equal a real number between -1 and 0...</p>
<p>hardest to easiest:
science
math
reading
english</p>
<p>and i'm not an english kinda person....</p>
<p>Blue: the answer to that question was a power of 1 if I recall, because any of the other options made it too big or too small.</p>
<p>i didnt get that question kknudsen12...im not really sure how many there would be...i woulda graphed it and tried to figure it out from there</p>
<p>blueducky1221,
Hmm, what were the choices again..
a=2?</p>
<p>oh, is there any way for me to get the scores sooner?</p>
<p>Yeah I did the substituting too to get x^2 + y^2 = 4, yielding infinitely many solutions.</p>
<p>Well I put y = 3/x and y = 10 + x into my calculator and graphed them and I got a line and a hyperbola, meeting in 2 different places... So that's why I put 2... maybe I'm completely wrong on that thinking though.</p>
<p>I think you may be right...</p>
<p>Yay! I put two solutions, too. I didn't have my graphing calc but I thought one was a straight line and one a parabola and it seemed like they would intersect twice. I was trying to rush though so I kind of guessed...</p>
<p>Yeah i was thinking something was weird.</p>
<p>xy=3</p>
<p>(x+y)^2 = 10</p>
<p>x^2 + 2xy + y^2 = 10, then substitute 3 for xy.</p>
<p>x^2 + y^2 + 6 = 10</p>
<p>x^2 + y^2 = 4, then you can use whatever numbers you choose and there will be an answer. No pretty answers, but answers nonetheless.</p>
<p>does anybody remember answers about the fiscal policy on the reading section?</p>
<p>The ACT has a predetermined scale, right? I think for basically everyone you miss, at least at first, you lose a point (at least in the science section). I just feel like this test was harder than the last one I took...Anyone else?</p>
<p>Ughhh, I had to fill in pure guesses on both the reading and science out of loss of time. It all went pretty bad. Is it worth canceling if you think you did worse? Or will the colleges ONLY look at the top score and not even be affected by a second time lower score? Opinions please!</p>
<p>kknudsen: you cant do it that way because yes, y=3/x, but then since (x+y)^2 = 10, y= (sqrt10)-x</p>
<p>No, adidasty, I think we're wrong. Damn it, there's always December.</p>
<p>(x+y)^2=10
Factors to
y=(+or-sqrt10)-x</p>
<p>Graphing y=3/x and y=sqrt10-x, we can clearly see two solutions.</p>