Dec 2012 - Math II Discussion

<p>@SpaceDuck, prob is, i just estimated from memory. and no, the 4 digit number was 8. i also got that wrong. heres the explanation: let x=the one prime number, let y=another prime. therefore, n= x^3 y. thus, it is divisible by n, 1, x, x^2, x^3, xy, x^2y. which adds up to eight. i missed the last two factors…</p>

<p>anyone put january for the dove population question?</p>

<p>january of every odd year</p>

<p>@killerskullz, i think you’re talking about the wrong problem. the one with the answer 6 was asking the order, had nothing to do with prime numbers. but on the problem you’re speaking of, I omitted that one so you may be right on that one.</p>

<p>serendipity what answer choice was that? I put D, January (I think it said every even number year, but looking at the graph of the equation I think it’s every year it will reach it’s maximum)</p>

<p>my memory is probably just terrible.</p>

<p>EDIT: I stand by my answer choice D, because it will take 2 years to get to the maximum again, and the starting year was 1990, so it will be January every even number year.</p>

<p>oh yeah the 1234 where 2 follows 3 was 6. and the prime number was 8. and it was every odd, because if you graphed the fxn, it had a max at t=12 (january of next year), so the max had to be at 1991 because we started off at 1990. and then it repeated every 2 years.</p>

<p>@SpaceDuck yeah you are right, I just remembered that’s what I choose too.
@killerskullz the one about 4 digit number is actually a different problem. We were discussing the one that asked for the number of four digit distinct numbers can be made with four digits (1,3,2,8) assuming that 2 must always be followed by 3.
You are right on the one about prime numbers</p>

<p>it reached max at t=12, t=36, t=60. thats once every 2 years</p>

<p>Did anyone get something like 2sqrt(50) + 10 for that perimeter one?</p>

<p>what number is the one about dove population?</p>

<p>will post my responses later. missed 3 i think so far.</p>

<p>will discuss later</p>

<p>its alright youre gonna get a 780 prob, hopefully. first time for me, pretty sure about that 800 because missed 2, omitted none.</p>

<p>@killer it’s looking like you’re on track! Hope you do get it bud</p>

<p>What was the interquartile range question that someone mentioned? I don’t remember that question. I remember a question just asking for the range from a list of numbers.</p>

<p>gave some data, you had to find Q3 and Q1, find the difference, then find the range of the data they gave you. and finally divide Q3-Q1 by the range to get 31%</p>

<p>It was harder than expected. I omitted around 8 i think. Idk how many i missed. :frowning: It wasn’t that bad tho.</p>

<p>were the polar coordinates that didn’t exist in quadrant II?</p>

<p>EDIT: Going to wait a little bit more to talk about the test.</p>

<p>^thinking back that sounds right, I didn’t know what a polar coordinate was… hooray for a (hopefully) nice curve</p>

<p>Anyone still have the function for the doves question in their calculator?</p>