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Hi guys! Now that HSC is over I really want to get rid of my textbooks. I only have a few, so please contact me if interested! All prices are negotiable, just send me a PM or comment below. Trade location is also negotiable, but preferably in the Hills/Epping area or city. Preliminary...

Mathematics HSC 2010 Question 10b) (ii) Could someone please explain how to approach these questions? I'm not sure if this is actually hard to visualise or I'm just being dumb, because the sample answers solved it pretty easily xD Thanks!

Mathematics HSC Question 12d) (ii) The answer is just 0.4 x 10 x 32.8 but the reasoning isn't sticking into my dumb head? Help please ;-; Feeling so screwed :')

MX1 HSC 2012 Question 12d) (i) Thanks~

MX1 HSC 2013 Question 13 b) (ii) Can't remember how to do these :/ Thanks!

We finally got our reports! School rank: top 10 English Advanced: 10/122 Mathematics: 12/65 Mathematics Extension 1: 20/65 Chemistry: 11/54 Japanese Continuers: 2/12 Japanese Extension: 2/8 Thank you~

I can't understand the solution, help please :') Thanks!

School rank: top 10 English Advanced: 17/122 Mathematics: 5/65 Mathematics Extension 1: 27/73 (cries) Chemistry: 12/55 Japanese Continuers: 2/12 Japanese Extension: 2/9 Thanks!

Question: A man 1.5m tall is walking directly towards a street lamp 8 metres off the ground at a speed of 36km/h. (i) Find the rate at which the length of his shadow is decreasing. (ii) Find the speed with which the tip of his shadow is moving along the path. Thanks!

Question: A person borrows $200,000 from the bank to put down the deposit for a new house at a rate of 9% per annum, compounded monthly. At the end of the month, she pays back $5000. Find how long it takes to repay the loan, correct to the nearest month. Thanks!

Question: A ball is thrown into the air, and the height of the ball above the ground in metres after t seconds is given by the equation x = 2e - t + 2log(t+1) (i) Find when the ball comes to a rest. _____________________________________________ I don't know if I'm being stupid...

Could I get some help with (iii) please? :) (This is Q7(a) from the 2002 3U HSC paper) Thanks!

Question: The pH of an acid is given as 5.0 and it is also triprotic. Calculate the hydrogen ion concentration of the acid. ----------------------------------------------------------------------------------- Just checking, the proticity of the acid shouldn't affect the concentration of...

Prove by using mathematical induction that: \\ \quad \\ a\quad +\quad ar\quad +\quad a{ r }^{ 2 }\quad +\quad ...\quad +a{ r }^{ n }\quad =\quad \frac { a({ r }^{ n+1 }-1) }{ r-1 } Help please :'(

Could I please have some help with these questions --- I keep doing something wrong :/ Thanks!

I need some help with evaluating this... I think I've got the integration bit right, but I don't know what to do with the 'n' when evaluating Thanks! :)

Could someone please help me evaluate this? I'm having a mind blank Thanks! :)

Hey everyone! I was thinking of using 'Invictus' as a related text for 'The Tempest' but quite honestly I'm really stuck. I wrote another essay on Discovery using a different related text, but my teacher said that it would be better to use something different. Did anyone else use...

Hey everyone! So we got our first assessment marks about two weeks ago and I still haven't recovered completely. I feel like I didn't meet my expectations, and I definitely didn't fulfill my parents expectations. I've seen a few other threads like this but I just want to get some reassurance...