# Search results

1. ### Selling Preliminary/HSC textbooks!

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...
2. ### Volume Question

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!
3. ### Simpson's Rule Question

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 :')
4. ### Parametrics Question

MX1 HSC 2012 Question 12d) (i) Thanks~
5. ### Rates of Change Question

MX1 HSC 2013 Question 13 b) (ii) Can't remember how to do these :/ Thanks!
6. ### ATAR estimate please!

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~
7. ### Rates of Change Question

I can't understand the solution, help please :') Thanks!
8. ### ATAR estimate please

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!
9. ### Rates of Change Question

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!
10. ### Financial Maths Question

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!
11. ### Motion question

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...
12. ### Inverse Functions Question

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

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...
14. ### Induction Question

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 :'(
15. ### Inverse Functions Question

Could I please have some help with these questions --- I keep doing something wrong :/ Thanks!
16. ### Integration question

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! :)
17. ### Limits question

Could someone please help me evaluate this? I'm having a mind blank Thanks! :)
18. ### Please help! 'Invictus' as a related text for 'The Tempest'

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...
19. ### I feel like I failed my first assessments (time to rant)

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...