Recent content by osnola

  1. O

    HSC Chemistry SOLUTIONS / Thoughts / Predictions

    does anyone know how many marks question 31 was worth? the one with finding the concentration of chloride ions in the solution with silver
  2. O

    HSC Extension 1 Mathematics Predictions / Thoughts

    am i the only one that did 14 b) iii like this
  3. O

    HSC Extension 1 Mathematics Predictions / Thoughts

    how would 67/70 align?
  4. O

    HSC Extension 1 Mathematics Predictions / Thoughts

    Okay good I got it right then, B and A just both looked so similiar
  5. O

    HSC Extension 1 Mathematics Predictions / Thoughts

    What did people get for q7 in mc?
  6. O

    HSC Extension 1 Mathematics Predictions / Thoughts

    There was a super easy way to do that one: let theta = arccos(x) cos(theta)=x draw a right angle triangle with theta as the angle, x as adjacent, 1 as hypotenuse and sqrt(1-x^2) as opposite then tan(arccos(x)) = tan(theta) = opposite over adjacent = sqrt(1-x^2)/x
  7. O

    HSC Extension 1 Mathematics Predictions / Thoughts

    Anyone know how to do the first part of 14 a)? Only question I couldn't figure out
  8. O

    HSC Extension 1 Mathematics Predictions / Thoughts

    That what I got as well
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