Recent content by Youi_

re: HSC Chemistry Marathon Archive One week to Chemistry shall we make this thread more active?

Re: HSC 2013 2U Marathon Leave more lines empty makes the solution more clear :)

Re: HSC 2013 2U Marathon Yes blame it on the infallible calculator <> hahaha my calculator sometimes loses its mind too.

Don't think too quickly you might want to finish the exam as fast as possible to check over for silly mistakes and what not but don't let that make you create even more silly mistakes from rushing just take it easy and if Q16 doesn't make sense just look at it from different angles or points of...

Re: HSC 2013 2U Marathon Let alpha=a for simplicity cos(90-a) = sin(a) (2\sqrt{5})^2=x^2 + 4 - 4xcos(90-a) 20= x^2 + 4 -4sin(a) 4sin(a) = x^2 - 16 sin(a) = \frac{x^2 -16}{4x}

Re: HSC 2013 2U Marathon He, and yes something along those lines. English HSC was last week I don't care much anymore about my grammatical skills until next year lol.

Re: HSC 2013 2U Marathon edited

Re: HSC 2013 2U Marathon Parramatta Eels have a 0.1 chance of winning a game they play. How many games must be played so that they are 99% certain of winning.

Re: HSC 2013 2U Marathon Total beads produced over 5 working days = 480,000 2% of 480,000 = 9,600 defective beads?

Re: HSC 2013 2U Marathon Neither do I

Re: HSC 2013 2U Marathon I got 72

Re: HSC 2013 2U Marathon $ii)$ \ \ Let x=log_a b a^x=b $ Take log c of both sides$ xlog_c a = log_c b x= \frac{\log_c b}{\log_c a} $Remember that$ x=log_a b :)

Re: HSC 2013 2U Marathon Oh yeah I forgot +c

Re: HSC 2013 2U Marathon x^3 + 3x^2

Re: HSC 2013 2U Marathon Thanks