October 15 PSAT Discussion

<p>Oh god major fail for me...I only answered 4 on both math sections and they were just guesses...</p>

<p>it was 7 times 4 times 4--->112</p>

<p>@ zoaxanthellae: i did the same thing as you on mars, reading, and comedy.</p>

<p>I put 86 for the cube one. Seems right to me...</p>

<p>Kind of worried about the writing section. I barely checked it over.</p>

<p>EDIT: Oh yeah, it was 112.</p>

<p>Here's how I approached it (the shaded square one):</p>

<p>The area of the square was 6^2, or 36. If you break the square into four smaller squares, then the area of each quadrant is 9. The radius of the inner circle was 3, so the area of the hypothetical circle is 9 pi. that means in the full circle the each of the quadrants the area is 9 pi / 4. </p>

<p>So for two of the quadrants that the circle covered, the area of the white region was (9 - 9 pi / 4) each. Multiply the whole thing by 2 for the other quadrant where the shaded area covered it. For the remaining two areas, the circle wasn't shaded there, but the white area was like a circle, so you do the same thing but use the square's side as the radius for a hypothetical circle. The area of the quadrant was 9, and the area of the "white" circle was 9 pi / 4. So just add up all the white areas:</p>

<p>2(9 - 9 pi /4) + 2(9 pi / 4) = 18 - 9 pi/2 + 9 pi/2 = 18. Since the white area is 18, the shaded area has to be 36 - 18 = 18.</p>

<p>I put both of those answers, zoaxanthellae.</p>

<p>I'm sure about the desert island one. I was conflicted by the comedy question but I put agreement because both authors basically said the same quote about comedy and anticipation.</p>

<p>zoaxanthellae and I think alike. great minds</p>

<p>Ahh; they pobably cubed the size change - I was thinking of that but I only had like 30 seconds so I just did the faster thing.</p>

<p>What was the answer for the question about the difference of the 1st 1000 even integers? 2000-2=1998?</p>

<p>An0maly - or you can just flip the pieces over and save mass time. ;)</p>

<p>For the even integers, I believe it was 2000-0 = 2000.</p>

<p>I misread it as first 1000 numbers, so I put 1000.</p>

<p>oh, okay, i just remembered one! the function/graph? anyone remember? i'm pretty sure it was near the beginning of the second section.</p>

<p>@ elaslawek - A person asked for the mathematical explanations, and I recollect having 8 minutes left for that problem so I did fine =]</p>

<p>The function one I put x + 2y = -1 I believe. </p>

<p>For the even integer one, I don't think 0 counts.</p>

<p>a was 16 I think.</p>

<p>Anyone have any idea what a score would be for 2 wrong on math?</p>

<p>zoax---i think that would be a 72ish</p>

<p>zoaxan - I put the same answers on mars and reading as you but for the comedy, the complete agreement seemed extreme. lol.
Dont remember what I put down.</p>

<p>I thought 0 would be considered an even integer. Wasn't sure.</p>

<p>@Last few posters</p>

<p>For the Mars passage, I said "...recent explorations..." as well. I was stuck between this and "...amateur astronomers...", but I realized that the guy in the second passage wasn't even an astronomer. I think he was a geologist or something.</p>

<p>For the comedy one, it's "completely agree" because even though the first guy scorned stand-up comedy, he did did note that it is all about being unexpected and witty. But I really hated the way there were 3 choices that represented different degrees of agreement. Lol...there was like "grudgingly agree", "completely agree" and, "scornfully agree"...something like that.</p>

<p>Yes, the answer to the circle problem is 18. It was half of a 6x6 square.</p>

<p>An0maly- I put the x + 2y=-1 also I think.
What was the answer for the function; like which is the highest it can go?
I wrote 1.5
guessed :(</p>

<p>@ an0maly: i was actually talking about a different one. i think you're talking about the "reflected across the x-axis" one. do you remember the original equation? </p>

<p>and what was the problem for the "even integer" one? i can't remember..</p>

<p>@ zoaxanthellae - I put all those answers as well. I thought "complete agreement" was extreme, but it was best supported. </p>

<p>For the math question where if 1 circle has half the radius of another, how many points of intersection are there, the answer was 2 correct?</p>