December 2010 ACT Math Discussion

<p>wongtong, what was question #60?</p>

<p>Question 60 was like this:</p>

<p>If r > 0 and s > 0…</p>

<p>SqRt(r/s) + SqRt(s/r) =…</p>

<p>F*** , I though it was r/s and r/s for both and put 2Sqrt r/s F*******!!!</p>

<p>@mike the answer was s+r/Sqr Root(sr)</p>

<p>yea, its like how a/b + c/d = (a/b)(d/d) + (c/d) (b/b) = (ad/bd) + (bc/bd) = ad+bc / bd</p>

<p>Okay for the similar triangle one where it said the smallest side of the small triangle was 9 and the smallest side of the large triangle is 16 and the perimeter of the smaller one is 34, what did you get for the perimeter of the larger one?</p>

<p>Because if you just multiplied the perimeter of the small one by the ratio you get one answer which was on there</p>

<p>But if you found the other 2 sides of the small triangle by using the give perimeter and multiplied them all by the ratio you got a different answer… which was also on there</p>

<p>dammit, down to 35, did any one confirm on the numeric alphabetic soup combination question? Hopefully a +1 curve</p>

<p>tomaras, i believe it the perimeter of the smaller was 36 and so the answer came out to be 64</p>

<p>I got 64 for the perimeter and similar triangles tomaras is talking about.</p>

<p>nevermind I’m stupid I did it again and both ways come out to 64 … Gah i better not have messed up that simple math on the test haha… I know it came out to a nice number that was on there, lets hope it was 64 :)</p>

<p>64 here, too.</p>

<p>does this answer sound familar: (4-1.75)^2 * pi…it was A.</p>

<p>It was 64 either way…</p>

<p>and yes eagles, that is correct.</p>

<p>Yes eagles that sound familiar.</p>

<p>x - abs(x) = never positive.</p>

<p>mikey it was always zero, atleast thats what I got</p>

<p>wasn’t the last one like radical(n/r) * radical(r/n) just 1? I had like 20 seconds when I got to it so I wasn’t sure</p>

<p>Nope </p>

<p>-3 -abs(-3) = -6</p>

<p>This was the easiest section. I ran out of time and didn’t get to answer 3…so if I get 53/60 right (even though I think I got all of the questions right), what score should I get?</p>

<p>and mike’s definitely right it was never positive</p>