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  1. qwerty44

    Trigonometry Question.

    You should tell us what you did so we can help you.
  2. qwerty44

    help pl0x

    http://www.boardofstudies.nsw.edu.au/hsc_exams/hsc2011exams/pdf_doc/mathematics-hsc-sample-answers-11.pdf
  3. qwerty44

    Physics Tutoring For HSC 2014 -- Starting Term 3 Holidays, 2013 [FILLING FAST!]

    Re: Physics Tutoring For HSC 2013 -- Starting Term 4, 2012 [FILLING FAST!] Looking at the results of your students, there must be something in those cupcakes :P Are they sold separately?
  4. qwerty44

    Help!!

    Yes, have a story ready, or at least a plot that complies with the Area of Study.
  5. qwerty44

    2u maths test

    What is your school rank, and where are you ranked in your cohort?
  6. qwerty44

    Circle geo reasoning

    http://community.boredofstudies.org/showthread.php?t=282011 More specifically: http://k.minus.com/jfpQrNM8MT9cy.jpg
  7. qwerty44

    Help with the following questions please

    \begin{align*}&Q10(a)\\&y=cos^4x\\&y'=4cos^3x \cdot~-sinx\\&=-4sinxcos^3x\end{align*}
  8. qwerty44

    Two easy Q.s for +Rep

    But isn't that different to proving logb(x)=y then b^y=x? Logs were invented by John Napier as assistance in multiplication, and were essentially simple calculators. How can you prove a concept created by man, not discovered by man? (Unless I am dead wrong, if so im sorry)
  9. qwerty44

    H=mc(triangle)T

    Don't know chemistry, but that 'triangle' is delta. Δ
  10. qwerty44

    Extension 1 Maths good textbooks

    Excel is just like or a bit above mif in terms of difficulty. Cambridge, Fitzpatrick and terry lee are best.
  11. qwerty44

    How much of prelim physics is needed for HSC?

    makes sense. Hopefully they are more interesting.
  12. qwerty44

    How much of prelim physics is needed for HSC?

    ah kk just looking at the HSC syllabus it looks like electricity is needed for M&G a fair bit.
  13. qwerty44

    How much of prelim physics is needed for HSC?

    The syllabus says its assumed knowledge, but how well do you need to know it?
  14. qwerty44

    Maths help

    Yep that proves those two are perpendicular to each other. Then show the third line crosses both of them to form vertices of a right-triangle.
  15. qwerty44

    HSC Trial Paper Share thread

    Sorry I should have specified, the Ext 1 papers are maths.
  16. qwerty44

    G Math help :)

    If the results were accurate, that means that you need to add: -The number of people with the flu and the test indicated so + -The number of people without the flu and the test indicated so. So 72+256=328. Then to find as % put it over 347, which is equal to 94.52449568%, rounded to 95%. So (C)
  17. qwerty44

    Maths help

    Isn't it 2?
  18. qwerty44

    Maths help

    Perpendicular bisector means the line perpendicular to the line passing through those points, but also goes through the middle of those two points. So find the midpoint of the two points [ (2,?) ] and then use the point gradient formula. (are you sure the gradient is 1/2?)
  19. qwerty44

    Cool problem of the day!

    Correct.
  20. qwerty44

    HSC Trial Paper Share thread

    English Adv: http://www.mediafire.com/?5wh1brmavjkd5a9 Ext 1 maths Papers: http://www.mediafire.com/?gd6ag4ztjyc25pu Chemistry: http://www.mediafire.com/?ysyiek8p4k1qxb9
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