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  1. gr_111

    Year 12 2012 Chit Chat Thread

    Yeah, dunno, has anyone heard anything about a 'HSE' or 'HSC' or something like that? :)
  2. gr_111

    Year 12 2012 Chit Chat Thread

    Lol, so many english threads and questions being posted...
  3. gr_111

    Noise Cancelling Headphones for Study!

    just get a set of earmuffs if its not for playing music through lol
  4. gr_111

    Binomial Probability

    ahah!!!! yep i see it now thanks guys!
  5. gr_111

    Binomial Probability

    Well, the nCk is there because it tells us the number of ways we can achieve the desired of outcomes of k favourable results and n-k unfavourable results. So are you saying i should or shouldn't have it there?
  6. gr_111

    Binomial Probability

    Question from SGHS 2012 Trial: 12b) The probability that it rains on any particular day in London is 2/3. ii) What is the probability that it will rain on only two days during a whole week in London, and that these two days are consecutive? My working: There are six ways of having...
  7. gr_111

    What Should be Expected in 2012 Engineering HSC exam?

    I reckon the CSSA papers better reflect the HSC; Independent papers have a lot more longer response questions, which there aren't that many of in the actual HSC.
  8. gr_111

    Business studies 2012 report and essay predictions!

    yeah i think i did see that somewhere. I was just curious as to what others were getting etc. In the trial I did about 660 for ER and maybe 800 for report, so quite similar.
  9. gr_111

    Business studies 2012 report and essay predictions!

    How many words does everyone generally aim for in the report and extended response?
  10. gr_111

    Trig Help

    graph or solve or what? If its solve, what does the expression equal? edit: sorry, missed the '1'...
  11. gr_111

    Question!

    well you got that one right, so why don't you put up a question that you got wrong and we can maybe explain.
  12. gr_111

    Easy Parabola Q

    Yep, dw you're all over it! You should download "Geogebra", a free graphing program which makes it really easy to see whats happening with graphs and why a graph looks like it does.
  13. gr_111

    Easy Parabola Q

    no, your answer is correct for the vertex and focus you specified. The answer they have given swaps the co-ordinates of the vertex and the focus. i.e. focus(-1,1), vertex (-3,1).
  14. gr_111

    Margaret Grove HELP.

    for Q13 set up an equation like M = Ae^{-kt} and use the conditions t=0, M=A and then t=1600, M=A/2 to find k, which you can then use to work out the percentage. Just be careful with what percentage has decomposed vs what percentage is remaining.
  15. gr_111

    Rationalise the denominator with two surds?

    +1. You got as far as simplifying it, now you just have to rationalise it.
  16. gr_111

    Mathematics Help from MARGARET GROVE TEXTBOOK

    OP look here... http://community.boredofstudies.org/showthread.php?t=286802&p=5975899#post5975899
  17. gr_111

    so unmotivated :(

    +1000000!
  18. gr_111

    What is the strategic roles of the 4 functions?

    well they are examples of strategies, but the true strategic role of operations is pretty much what Examine says. Its ensuring resources are managed and allocated in a way that ensures the needs of the customer are met in the most effective and efficient way.
  19. gr_111

    financial ratios

    Yep. http://news.boardofstudies.nsw.edu.au/index.cfm/2012/9/17/Official-Notice-Ratios-in-the-2012-Business-Studies-HSC
  20. gr_111

    go here http://community.boredofstudies.org/showthread.php?t=290913 for carrotsticks ext 1...

    go here http://community.boredofstudies.org/showthread.php?t=290913 for carrotsticks ext 1 paper. he hasn't posted up solutions yet.
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