<p>aww damn. i just want a 760 +. im in BC Calc so it’s kind of embarassing lol. i have timing issues. i always run out of time.</p>
<p>For the one where the graph is f(x) and g(X) = 2 * f(x), was the graph just two times in magnitude but same x axis intercept? Choice A (steeper but same x-axis intercepts, etc.)?</p>
<p>Also, was that one 2^16? Choice E? It sounds obscure but it gave some weird function.</p>
<p>wrong thread :D.</p>
<p>…lololololol</p>
<p>How do you work the one that was like there are 5 vowels and how many 3 digit combinates can you make if the first letter of the combination is a vowel.</p>
<p>is it just 5x21x20=2100?</p>
<p>^That one wasn’t on my test. Was there more than one form?</p>
<p>To the post about the right triangle: Yes, it was secant. cos θ = 1/y
sec θ = y.</p>
<p>^ same are you sure it was math 2?</p>
<p>what was the answer to the question about mean and standard deviation</p>
<p>no, he got a math 1 question</p>
<p>ya that was math one…there were no restrictions so it was 5 * 26 *26…it was like 3380</p>
<p>^about f(x) * g(x):
if f(x) and g(x) are not the same equation (on of the premises of the Q), and they both have 2 distinct roots, then the resulting equation could have 4 roots (if f(x) and g(x) do not share any roots), 3 roots (if they share 1) or 2 roots (if they have the same roots).</p>
<p>^the mean and sd q was something like:
Someone takes 10 tests and has an average of 78.6. Their teacher drops the lowest test. If the person gets a 95 on the last test, which of the following MUST increase:
I. Mean
II. Median
III. Standard Deviation</p>
<p>Mean obviously must go up. Median does not have to go up b/c, for example, if the person had 10 78.6’s, dropping one of them and adding a 95 isn’t going to change it. SD also doesn’t have to go up. It could actually go down, e.g. if her scores were like 0,0,95,95,etc…</p>
<p>I got 93%. z= x-m/ o. where x is score, m is mean, o is std. (84-72)/(2)= 7% so it was in the 93%. I’m really not sure though. I skipped it on the test.</p>
<p>@hardworking21
He is in the right thread:
Yeah, that is what I got on both of those. 2* original function (zero would be the same) and 2^16
It was last A(1) = something and A(n) = 2^(A(n-1))</p>
<p>Did anyone get (n/2)(3n-1) for one of their answers? What about 2^8? Also, could someone restate the 2,3,4 zero question? I think I got that one right, but I don’t remember the question exactly.</p>
<p>Also, why is it z=0 and not x=0, y=0?</p>
<p>I got 2^8. in the the fourth term, its 2^2(4-1) or 2^2(^3) or 2^2^8. and yes I got A for the other one.</p>
<p>@Mordred
I did get that for the sum of the arithmetic sequence.</p>
<p>I got 2^16 for that one though.</p>
<p>The 2,3,4 one was like:</p>
<p>Two functions, f and g, both have two distinct real zeroes. How many zeroes could f(x)*g(x) have?</p>
<p>For the 3-d one:
the points were (0,0,5) and (0,0,-5)
If it were x=0, y = 0, that is just all possible z values. That is a line that goes through those two given points, which means all points on it definitely won’t be equal. the z=0 means the x-y plane, and any point on it would have the same distance to those two points. (hard to explain that part, imagine the points in your head I guess)</p>
<p>@nostalgicwisdom The grade in that problem was 5 SDs above the mean, which is way above the 99 percentile (the 68-95-99.7 rule).</p>
<p>its 2^16. yeah. 2* 2^(3) is 2^16. arghhhhhh :(</p>
<p>Okay, it’s Omit 3 and -1 now then I guess… I can get two more wrong to get an 800. Can someone confirm the 2^8 one? I was completely sure about that one, but now, I guess not.</p>