<p>wiat for th hyperbola one was it the center or vertices they were asking for??</p>
<p>“A circle touches both the x and y axes at one point. What is the center of the circle?”</p>
<p>I dont even remember seeing anything like that</p>
<p>Infamous, that’s an ellipse. And it said y=x intersects. Substituting one of the x or y solves for 3.something (which works for both x and y).</p>
<p>@King the center’</p>
<p>@infamous
i think question was (x^2/16)+(y^2/25)=1
and 3.14? i think</p>
<p>What did you guys get for the one with two triangles and a circle? i got 3.14</p>
<p>and i didn’t see a problem like that with regards to x and y axis tangency</p>
<p>oh no…you are right 123ninjatime…</p>
<p>so now i have a 42 raw…what would this put me at? 780? f*** i think im gonna cancel…</p>
<p>For the bird migration one, I remember the questions was something like this:</p>
<p>There are 14,000 birds in total on island x and y. Each year, some birds migration, but the population on every island stays the name. 20% of the birds on island x goes to island y. 15% of the birds on island y goes to island x. How many birds are on island x.</p>
<p>Does anyone remember the answer?</p>
<p>I ommitted 2 and got 3 wrong for sure… what am I at?</p>
<p>also what did you guys get for the migration problem?</p>
<p>i got 6 thousand something for migration one which was choice C</p>
<p>I got 3.14 for the two triangles and a circle as well.</p>
<p>How did you get 6000?
Edit: nvm just resolved it. It’s 6000</p>
<p>Wait, was is (20/100)X = (15/100)Y? And 14000 = X + Y? </p>
<p>How did I not see that? An easy system of equations.</p>
<p>Guys, I agree that the question with the ellipse was (3.12, 3.12). I swear there was a question about a circle touching the x and y axis at one point. It was really easy so u probably passed over it quickly but i just wanted to make sure that its center would be at (2, -2).</p>
<p>It was no triangle for the one with a= 4 and b=6, right? Because the height was slightly greater than 4, so no triangle was possible.</p>
<p>EDIT: Infamous, I believe you’re thinking of the second official practice test. I did that yesterday.</p>
<p>x = .80x + .15y
or
y = .20x + .85y</p>
<p>and y = 14000 -x
or
x = 14000 -y</p>
<p>yes it was no triangle. also if you used law of sines, sinx would be equal to 1.00002352 something like that which is impossible</p>
<p>I got 6,000 as well. It’s (0.2)(6000) + (0.85)(14000 - 6000) for island y. For island x, it’s (0.8)(6000) + (0.15)(14000-6000). Island x then gets a population of 6000, which was the same as what it started with. </p>
<p>@byahnoob - I’m not sure whether it was option B or C. Think I might have just bubbled the wrong answer. :(</p>
<p>I forgot the exact problem, but it was some stupidarse triangle problem and I got the answer to be something like</p>
<p>Sqroot( (3/k)^2 - 9) or something to that effect. Is that what anyone else got?</p>
<p>@cyno, yup i got that. because the hypotenus turned out to be 9/k^2 which is (3/k)^2</p>
<p>@meepster - oh crap</p>
<p>B was 6,000
C was 6,???</p>
<p>@Cynosuree</p>
<p>im not sure if i got Sqroot( (3/k)^2 - 9)</p>
<p>or Sqroot( 9 - (3/k)^2)</p>
<p>or was Sqroot( 9 - (3/k)^2) even a choice??? if not then i got the other one</p>
<p>What about the question where it said multiply the two functions and then how many distinct zeros are there? I remember both functions had (x-7) in them so I put 6 distinct zeros. Any thoughts?</p>