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  1. scardizzle

    year 12 approaches..

    It is piss easy to get a 90 ATAR. Considering you have already learnt the 3 unit course for maths you could probably get it with just your maths marks. "Rule number one is, don't sweat the small stuff. Rule number two is, it's all small stuff."
  2. scardizzle

    Q7 of SGS 1999 Trial

    Could someone walk me through the solution to this question? Im having a little trouble understanding what the hell i'm supposed to show. Thanks in advance
  3. scardizzle

    year 12 approaches..

    Can't wait to get it over and done with + looking forward to doing 8 units
  4. scardizzle

    Mathematics Extension 1 Marathon HSC 09

    is n = 29 and r= 9?
  5. scardizzle

    Probability :(

    P(atleast 1 pink flower) = 1 - P(no pink flowers) = 1 - (0.75)^n to exceed .99 1 - (0.75)^n > 0.99 therefore 0.01 > (0.75)^n therefore ln(0.01) > n x ln(0.75) therefore n > ln(0.01)/ln(0.75) therefore n > 16.00784... therefore n = 17
  6. scardizzle

    Questions from trial paper

    okay thanks, i wasnt sure what paper it was because the paper didnt have the title page
  7. scardizzle

    Questions from trial paper

    1.A unit square with the points ABCD, where A(1,0),B(1,1),C(2,1),D(2,0) i) a line, l, passes through the origin with a gradient m and cuts the sides AB and CD at P and Q respectivley. Comment on the possible values of m. ii) For what value(s) of m does the line l, divide the area of the...
  8. scardizzle

    odd question - combinations

    Not exactly sure why this is right but the reasoning is that you are implying an order so you divide by 4 factorial. Don't really understand the concept too well my self. 8C2 x 6C2 x 4C2 x 2C2 *1/4! =105 EDIT: i think this is why you divide by 4! consider abcdef in order to arrange these in...
  9. scardizzle

    even more permutations! T_T

    alternativley for 23 i) e precedes i half of the time therefore the answer is 7!/2 =2520
  10. scardizzle

    Projectile motion

    okay thanks, I didnt want to start up another thread so hopefully someone stumbles across this post. I had trouble with these questions from the CSSA 2005 trial
  11. scardizzle

    Projectile motion

    If the questions doesnt give us the equation, do we still have to derive the range and max height formula or simply quote it?
  12. scardizzle

    State rank

    meh so he changed tense, he probably was rushing his post... also 14 units damn....
  13. scardizzle

    biology vs physics vs chemistry

    The principle of relativity states that in an inertial frame of reference (one travelling at a constant velocity) one cannot determine if they are moving or not unless with reference to another frame of reference. That is if I were travelling in a car with all the windows blacked out on a...
  14. scardizzle

    New physics in focus book?

    actually comparing the old jacaranda which a friend bought with the newer version id say there are many more mistakes in the newer version
  15. scardizzle

    biology vs physics vs chemistry

    I find all HSC sciences are similar to what you' re describing. There is still very little independant thought required as many questions that are asked are directly from syllabus dot points and in the end it is a matter of memorizing responses then truly understanding concept. Mind you, you do...
  16. scardizzle

    How exactly does the HSC work?

    That's the thing, as a student you don't really get informed about how things work by your school, you usually have to find out for yourself. Also some teachers dont know how it works either :P
  17. scardizzle

    Integration by Substitution ??

    just checked the 2008 HSC, the question doesnt require you to use substitution. Although using substitution helps you see it better. You need to use the reverse chain rule: Intergral of f'(x).f(x)^n = f(x)^n+1/n+1 +c
  18. scardizzle

    2008 hsc!

    ftfy
  19. scardizzle

    2008 practice math school certificate emergency........help

    Initially Sam has 4700 and Isaac has 5000 votes more than half of the 1000 votes yet to be counted go to sam therefore adding 50% of 1000 to his score gives us 5200 atleast 20% go to isaac this also leaves him at 5200 there are 30% of the votes left i.e. 300 votes isaac can not with by 300...
  20. scardizzle

    Sydney grammar trial papers

    if you guys are in need of papers there was this huge bunch of em uploaded in the stickied "useful links" thread, its like 76 mb and contains all those grammar papers except the 08 paper which also has been posted later in the same thread
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