Search results

My predictions: Circle Geo: Either question 13 or 14 Induction: Either question 13 or 14 Probability + Perms and combs: MC + question 12 simultaneously Projectile: Question 13 Binomial: Question 14 Parametric: Question 12 or 13 Newtons Method: Question 12

Are you sure that its 9c1 * 9c0 * k for the coefficient of x^2 in 9c1(1+x)^8kx^2 ? I know it doesn't matter but it should be 9C1 * 8c0 * k

Im not entirely sure why, might have to ask drsoccerball. However my school is actually slowly accelerating science subjects such as chemistry and biology. Our cohort was the final cohort before they started accelerating science subjects...

Lol I just realised how much of a lurker porcupinetree is. He is always online but never posting

Re: HSC 2015 3U Marathon Non-inductive way of proving it (this is more of an extension 2 proof, but it should still be accepted since it says 'otherwise'): $ Assume: $ \frac{x+y}{2} \geq \sqrt{xy} $ Let x $ = n $ and y $ = 1 \therefore \frac{n+1}{2} \geq \sqrt{1(n)} $ Let x $ = n-1 $...

We didn't accelerate 3u, we only accelerated 2u. Unfortunately the 2013 cohort was the last cohort to be allowed to accelerate 3u in my school.

Good luck to the people who have extension 1 maths and physics next week!

Lol why would I want physics notes, I don't do physics... But you may want the notes if you are tired from using mreditors notes over and over again:haha:

Not really. You just have to be aware of the danger of social media...

This can be interpreted in so many different ways

Sorry, I just looked through the question again and I got the same answer as librah (I remember the multiplying the moles by 3 to get 0.0075, and dividing by 0.0415 to get 0.181). I must of remembered 0.006 from some other question I did last night. Edit: I remembered it from the 2014 hsc...

Whats wrong Gabriel Moussa?

Lol strange, I got 10.6 in the exam as the initial K, but after recalculating now I got 10 as well lol

It did say it reached equilibrium. "The mixture was allowed to reach equilibrium" and the initial volume is 1L

Also you can just use initial concentrations as pressure does not affect k constant, and so it will remain the same.

This is what I thought, hence I picked D. I didn't pay attention to the extra oxygen at the end since it had the n brackets, and hence it is in polymer form

Why haven't you written a guide for snaking yet?

Lol I actually quickly went through the method of producing soap in a school laboratory like 1 hour before the exam.