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About an hour on each. Maybe 1600-1700 words, not sure though, just guessing. And quality+quantity>quality :P

Good luck. Its 3U and...

I know right. Tbh though, it was very anticlimactic. I feel exactly the same now as I did waking up this morning.

Lol- do you go to Sydney Tech? Either that or our school thieved the question from a common source because we had that exact question. Ok, the way you do it: - Note that the standard reduction tables thingo correlates quite closely with the activity series - The higher on the table (like...

I've seen books that have worked solutions from 95 and I think Coroneus has one that goes back to 91 but I'm not fully sure.

Why does everyone consider this some secret formula? Someone at school asked me this as well. If you can differentiate properly, you can do things like that in your head without special 'formulas'

I just used BOGS to simplify where I was coming from. From a theoretical viewpoint, the financial account surplus is derived from the current account deficit (maybe not in Australia but as a general rule it it). Just looked up Riley's textbook and he says "The tendency for countries with...

Are you talking about a moderated assessment mark of 80? If so, and you get 98 say in the externals, your HSC mark will be (80+98)/2=89 -> which won't be a state rank but you'll have a state rank equivalent external. But honestly, if you're getting 80 at school, there is no way you are somehow...

First one is A. Look at just BOGS for example. A BOGS deficit implies that we are importing more (supplying more dollars) than we are exporting (demand for dollars). Thus the currency will depreciate. Australia's situation is slightly different but generally it is accepted internationally that a...

Alternatively, you could note that savings must equal investment and therefore: 0.2Y-100 (savings function)=40 0.2Y=140 Y=700

These things never get hard though- once you know the rules, they become complicated yes but never hard. I would recommend tbh focussing on other things in chem

Why do you want to resit it? Did you bomb out because of this?

- Define a bufffer - Explain what it does - Give an example of a natural system (such as seawater) - Write the equilibrium equation for this buffer, identifying the acid and base (depending on which one is conjugate etc.) - Show that with an introduction of more H+, equilbrium shifts the other...

Find modulus of top and then modulus of bottom and divide.

Haha no.

I think with 3U, with ties they look at performance in other maths subs (4U) which prevents ties. You're probably right with the 4U :)

3U is definitely full marks and 4U I think is a bit higher (maybe 114/115) depending on the difficulty of the test.

(a) (a^2+2b^2)(3-a-b) -> Factorise common terms (b) (a+b)^2((a+b)^2+(a-b)^2)= 2(a+b)^2(a^2+b^2) -> Factorise common terms and simplfiy (c) (x+y)(x^2-y^2)=(x+y)^2(x-y) -> Factorise commmon terms and then difference of two squares

Commerce/Law at either USyd or UNSW, haven't decided yet.

Yeah there's nothing really wrong with this because everyone was in the same boat. Assuming you were fast, you'd have started the essay by this point so you finish the first essay, then do the short answer and then the other essay. Though how didn't you guys notice in reading time?