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  1. saltshaker

    BoS Trials Maths, Physics and Business Studies 2023

    Will solutions be released before the 4u HSC?
  2. saltshaker

    Advanced Maths Predictions

    i cant believe they made us write a 4 mark essay for stats </3 otherwise it was fine
  3. saltshaker

    New Rankings.

    theyre also academically selective
  4. saltshaker

    New Rankings.

    basically con high, didnt they rank 2 in2019 or 2020?
  5. saltshaker

    BoS trials Maths and Chemistry 2022

    how would you do q12 a for 3u?
  6. saltshaker

    stats - uniform distribution problem

    answer is (sqrt3)/2 ignore working
  7. saltshaker

    Should I drop Chem for Modern?

    I'm actually doing 13 units (sor is 1u), so I will have to choose between the two as we can only do 14. Neither are prereqs to my uni courses so I'm leaning towards modern history and will probably switch
  8. saltshaker

    Should I drop Chem for Modern?

    For reference my other current subjects are Maths x1, Eng x1, Physics, Music 2, SOR I (cant drop sor) Modern Chem Content Seems interesting; I can self study this a bit easier than chem but I don't mind self studying either Also interesting - honestly I can do both subjects fine Teacher...
  9. saltshaker

    binomial expansion question

    if i decided to use that in an exam would i have to prove it first?
  10. saltshaker

    binomial expansion question

    (cambridge 15C) answer: 40C20 I attempted this by first seeing that every term of (x+1/x)^40 multiplied by its reciprocal from (x-1/x)^40 creates a constant and is also cancelled out e.g. x^40 * -x^-40 = -1, x^-40 * x^40 = 1, cancels out because of symmetry However the remaining middle terms...
  11. saltshaker

    do planets form the same way as stars

    my yr10 science teacher told me that planets form exactly the same way as stars (from nebulae + gravity) but that doesnt make sense because stars are mostly gas while planets can either be gaseous or solid. can I get some clarification on how exactly planets form?
  12. saltshaker

    Tangent from point

    Is it not the same as (a), but using a different set of points? Assuming you already know a
  13. saltshaker

    multiple zeroes question

    Just (b) Ans (k =0 T(origin), k = 4/27 T(2/3, 8/27) The question doesn't make any sense anyways but idk if I'm missing something
  14. saltshaker

    multiple zeroes question

    this topic will singlehandedly drop my avg from 100% to 50% ty
  15. saltshaker

    multiple zeroes question

    When I sub in x = -2 on the original eqn m gets deleted?
  16. saltshaker

    finding the limit of the derivative to determine how quickly a function increases/decreases?

    My teacher mentioned this as a side note to graphing some questions, but we passed over it really quickly and I haven't been able to figure out what they meant by that. Anyone have any idea on what this concept is and how to use it?
  17. saltshaker

    Textbook recommendations

    are those new or old syllabus
  18. saltshaker

    Top 10 Easiest HSC Subjects

    Math Adv definitely isn't easy, my adv cohort got destroyed by the tests, box and whisker plots showed like 40-50% of the grade failed in our adv assessment for year 11. Also if we're going easiest English Studies should be here
  19. saltshaker

    Fort Street and Girraween Portfolios, Reports and extra cirriculars

    they say you are like the 5 people you talk to the most o_o
  20. saltshaker

    do you guys use correction tape?

    > TL;DR just try to slowly lose your dependency on white outs for your own sake. whiteout addiction costs the atars of hundreds of young australians every year
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