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  1. P

    What is meant by an angle of 75.0° with the vertical.

    the angle with the vertical is the angle that the rain would be making with a line going straight down
  2. P

    Capture/Recapture Question

    so if 8 of the 36 trout were tagged, then 8/36 of the total trout in the dam should be tagged. Therefore 20 is equal to 8/36 of the total number of trout. dividing 20 by 8/36 gives you 90, so b.
  3. P

    what is your school up to in 4u

    complex polynomials graphs integration (just started)
  4. P

    No. Of Periods

    5 periods a fortnight before school we were planning on doing it during 2u but the assistant principal screwed up and made our teacher teach general every time we have 2u :(
  5. P

    starting a speech

    Hey guys, can anyone tell me how to start off a speech other than "Today I will be talking to you about..." opinions please :)
  6. P

    chemical reactions to produce electricity

    Does anyone know any future ways of producing portable electricity through chemical reactions?
  7. P

    Where is your school up to?

    I'm still doing complex numbers just started complex polynomials stuff today teacher doesn't really explain, just copies out of his book not sure what book it is he just photocopies it and gives it to us I think it's Fitzpatrick it's got new senior maths: four unit course at the top
  8. P

    Which subject/s do you bludge most in?

    english and sor 1 absolutely hate them but they're compulsory sigh...
  9. P

    catcher in the rye and immigrant chronicle

    Which poem does catcher in the rye most relate to in immigrant chronicle? Opinions please
  10. P

    Welcome & Roll Call - Class of 2010

    yay... yr 12... anyways signing in subjects in sig. good luck everyone! :)
  11. P

    Do you actually enjoy the subjects you do?

    i enjoy my maths and science. its just english and sor i hate. sigh failing my compulsory subjects
  12. P

    urgent maths help needed!

    find the gradient of a point within the region then show there are no turning points within that region i.e. the gradient doesnt change
  13. P

    Some Quick Qs

    3.a. 0.187 is positive so θ is in the first and 4th quadrant θ = 79.22, -79.22 b. sinθ = -3/4 -3/4 is negative so θ is in the 3rd and 4th quadrant θ = -48.59, -131.41
  14. P

    Some Quick Qs

    1. P = [(-1 + 5k)/(k +1) , (7 + 2k)/(k+1)] since it lies on 5x-4y=1 [5(-1+5k)/(k+1)] - [4(7+2k)/(k+1)] = 1 (17k-33)/(k+1) = 1 16k - 32 = 0 k = 2 2. draw the triangle hyp = 5 opp = 2 adj = √21 cos(270 - θ) = -cos(90 - θ) = -sinθ = -0.4 cot(360 - θ) = -cotθ = √21/2
  15. P

    red tree analysis

    can someon send me an analysis of teh red tree by shaun tan because i can't find one on the net anywhere or just tell me how it relates to belonging
  16. P

    question

    i was just wondering if it was better for my atar if my whole class did well in private assessment like research tasks or in the HSC exams
  17. P

    Get into J =

    cross multiply is where u get the bottom of each fraction and move it over to the top of the other fraction. if u still dont get it multiply both sides by (p -j) Q(p-j)/p =s (Qp - Qj)/p = s multiply both sides by p Qp - Qj = sp and u end up with wat i got before
  18. P

    Get into J =

    cross multiply and u get Qp - Qj = sp Qj = Qp - sp j = (Qp - sp)/Q
  19. P

    Maths

    the horizonatal length is x and the vertical length is y. to get y rearrange the eqn to get y = -3x/2 + 3 so the area is x(-3x/2 + 3) A = -3(x^2)/2 + 3x) dA/dx = -3x + 3 stat pts at dA/dx = 0 -3x - 3 = 0 x = 1 d2A/dx2 = -3 --> max pt A = -3/2 + 3 =1.5
  20. P

    Get into J =

    can u be more specific about wat u want? did u want to make j the subject? also is j part of the fraction?
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