December 2007 MATH level 2

<p>maybe it was a trick question? If u go higher up, then adding prime numbers and 1 is not prime. 23+11+1....... for example. I think they expected us to plug in like 3 and 7 and 11?</p>

<p>i see where ur coming from, but i think the question states "possibility" which means that it just needs to work, not like a law where it HAS to work.
I didnt have time to check II and III, and i realized I worked because 5+7+1 = 13.</p>

<p>^^ it said where it COULD work, not that it HAS to</p>

<p>I hope ur right, im pretty sure i put that I and II worked. I remmeber spending a good while, trying diff. combinations of prime numbers, though i was too stupid to go high enough to the 20s.</p>

<ol>
<li>shape of object 2 units from a line in a space Cylinder</li>
<li>3 lines of a triangle on a coordinate plane, multiply their slopes 1/7 add slopes -1/7</li>
<li>pyramid with square base ~8.25ish</li>
<li>stem and leaf plot 36.5</li>
<li>graph with equation, and it asked for shift 4 units to the right</li>
<li>b is greater than a, than f(b) is greater than f(a) for all values of x X^3</li>
<li>length of diagonal of parallelogram with sides 27 and 29 34?</li>
<li>the number of teams if each team plays each other once and there are 28 games 8 teams</li>
<li>Y/(2x-y)=something and X/(2y-x)=?" 11/29</li>
<li>what polar coordinate does NOT equal (1, pi/2) (-1,-5pi/4)</li>
<li>time between max height and when the ball hits the ground 1 sec</li>
<li>the following is a shorter distance then the figure shown if x^2 + y^2 < 13</li>
<li>The question had 2 equations, one long one and one short one, and it realted to dog years. I and III were both true</li>
<li>the maximum of sin(x)cos(x) .500</li>
<li>What value of K is needed for the equation to work? the equation had an absolute value thing [x-3]=K if [3x-9]=1. K=1/3?</li>
<li>minimum number of gloves to pull out in order to guarantee a match pair: 4</li>
<li>F(100) for a graph: 1</li>
<li>s+1 r+1 roots: x^2+9x+10</li>
<li>Probability of picking two even numbers from a set {1,2,3,4,5,6,7,8,9} 1/6</li>
<li>A question about from 1940-1970, x amount of money triples...so what is the annual rate of increase from 1970-2000..????</li>
<li>And I think there was a half-life question? About something being reduced to 25% 18.3%?</li>
</ol>

<p>Number 10 was definitely (1, 13pi/4)</p>

<p>The question was comparing to (1, pi/4) not (1, pi/2)
there was an answer similar to (1, 13pi/4) that was (1, 9pi/4)
but (1, 9pi/4) works so (1, 13pi/4) doesn't (they are in different quadrants)</p>

<p>right, but (-1, -5pi/4) doesn't work, either.</p>

<p>can we please get a solid answer on this?</p>

<p>that question.......wasnt it A? I forget what A was, but i remember that if it was -10 or something, the radius had to be pi plus whatever r originally was.</p>

<p>this is kinda depressing =.=</p>

<p>yeah i remember putting A as the answer.</p>

<p>what was the answer? if i get this one wrong i'm probably gonna cancel my score.</p>

<ol>
<li>shape of object 2 units from a line in a space Cylinder</li>
<li>3 lines of a triangle on a coordinate plane, multiply their slopes 1/7 add slopes -1/7</li>
<li>pyramid with square base ~8.25ish</li>
<li>stem and leaf plot 36.5</li>
<li>graph with equation, and it asked for shift 4 units to the right</li>
<li>b is greater than a, than f(b) is greater than f(a) for all values of x X^3</li>
<li>length of diagonal of parallelogram with sides 27 and 29 34?</li>
<li>the number of teams if each team plays each other once and there are 28 games 8 teams</li>
<li>Y/(2x-y)=something and X/(2y-x)=?" 11/29</li>
<li>what polar coordinate does NOT equal <a href="1,%20pi/4">B</a>** <a href="-1,-5pi/4">B</a>? (1,13pi/4)?**</li>
<li>time between max height and when the ball hits the ground 1 sec</li>
<li>the following is a shorter distance then the figure shown if x^2 + y^2 < 13</li>
<li>The question had 2 equations, one long one and one short one, and it realted to dog years. I and III were both true</li>
<li>the maximum of sin(x)cos(x) .500</li>
<li>What value of K is needed for the equation to work? the equation had an absolute value thing [x-3]=K if [3x-9]=1. K=1/3?</li>
<li>minimum number of gloves to pull out in order to guarantee a match pair: 4</li>
<li>F(100) for a graph: 1</li>
<li>s+1 r+1 roots: x^2+9x+10</li>
<li>Probability of picking two even numbers from a set {1,2,3,4,5,6,7,8,9} 1/6</li>
<li>A question about from 1940-1970, x amount of money triples...so what is the annual rate of increase from 1970-2000..????</li>
<li>And I think there was a half-life question? About something being reduced to 25% 18.3%?</li>
</ol>

<p>for 'number 10' both seem to work as an answer.
the only reason why i choose -1, -5pi/4 was becuase 1, 13pi/4 was on the quadrant opposite the 1, pi/4 so i figured that -1,-5pi/4 was 'more wrong' lol</p>

<p>we need to have a consensus on that question! it's making my head hurt, lol</p>

<p>if it's not A, then im seriously gonna be ****ed. I hate the collegeboard</p>

<p>To the people who took the exam:</p>

<p>If I just study from the PR book, will I be okay? I am currently a Calculus student as a junior and took precalc w/ trig last year. I have had no trouble with math (As) BUT I cannot retain anything! I am able to sleep in class, look at the book the night before, take the test the next day, and forget EVERYTHING within a couple days. I want to review/brush up with my math and take it next month. Will I require more studying?</p>

<p>What value of K is needed for the equation to work? the equation had an absolute value thing [x-3]=K if [3x-9]=1. K=1/3?</p>

<p>Wasn't the answer "all the choices above does not work"? I've plugged in for each answer choices and all of them didn't work. Do any of you guys remember having answer saying "nothing works..." ?????</p>

<p>Ykim - that's exactly what I did, and see how screwed I am @_@
I'd go pick up a few extra ones in addition to PR's. Try Barron's or Kaplan's.</p>

<p>anybody remember the question about the doses?
doses are taken after 4 hours, and the amount of substance decreases by 25% or something in 4 hours...
The question was to find the amount in teh body after 5 doses...
I think the answer was 18 something....
anybody remember that??</p>

<p>that was 18.3%!</p>

<p>and btw the ball question- im pretty sure the question was:</p>

<p>How many total seconds it takes the ball to reach 20m after reaching the
maximum height!!! Not how many seconds starting AFTER reaching the maximum height,.... so isn't it 2.5? If the Question told me to subtract, theres no reason I wouldn't have...</p>

<p>Also, the dog question: answers were I and II not I and III.
And I did (1,13pi/4) for number 10. I plugged all the answers in and that was the only different one.</p>

<p>wasn't the money increase or sth 6.67??
was there a question that had an answer 6.67??? aaargh..</p>

<p>plz need more Qs and answers before deciding 2 cancel or not :(</p>

<p>I got all those answers (even the 6.67 one), except for the ball question. I'm pretty sure I'm right. First I found the time at which the function was at a maximum and this was at 1.5 seconds. Then I subtracted the time at which the function was at 20 feet (2.5 seconds) which gave me 1. I don't remember the exact question but I doubt they would've asked for how many total seconds it took for the ball to reach 20 feet because it was the last question.. and it'd be too simple if 2.5 was the answer. Then again I might be wrong...</p>

<p>I got all the answers we talked about so far that I can remember my answers for, but I think I got the "pick two even numbers probability" question wrong. I got (4/9)^2, but we have 1/6 for an answer. Can someone explain why I'm wrong, please?</p>