There are a few ways to do this. The way I would do it is as follows. If this doesn't make sense, I'll try again:
1. Find stationary points on the graph (either by sight or by differentiating if you have the equation). These points are where dy/dx=0 so they are the x intercepts of the graph.
2...
I don't totally get your question. A negative in front of a fraction makes the fraction negative. This means that either the numerator is negative or the denominator is negative but not both :
-(4/5)=(-4)/5=4/(-5) but DOES NOT equal (-4)/(-5)
Does that make sense?
Okay. What I'm guessing they mean is this:
Q. 3p -(2/5) -2p -(1/4) =3
p=3+0.4+0.25
p=3.65
The problem with this is that the answer is 10x bigger (probably typo) and the question requires -1/4 instead of +1/4 in your original question.
Negotiating the cost of a t.v $300 generally isn't that hard given the current climate (did it myself about 7 months ago). Having said that, if you have to pay someone, maybe 25% of the discount they get, so the better they do, the better for them.
Possibly as aligning refers to changing marks based on predetermined standards (e.g. it is possible for everyone to get 90 as a HSC mark in 2U maths) but scaling changes marks based on the relative strength of the cohort doing that subject (to determine a rank for everyone). Having said that...
I've had a few people message me so I uploaded the ones I have here: http://www.mediafire.com/?tsniqyqtubbsl8e
Most have solutions but some years don't. Also, there are only about 5 or 6 3U papers (I couldn't find the missing years on a quick search)
Anyway, enjoy :)
Hey guys,
On the BOS website, it says that there were two correct answers for Q8 of the bio paper (LINK HERE)
Does anyone remember what the question was and the options?
Cheers
You can't predict ATAR's by HSC results as a 90 is physics is way better than a 90 in dance but ATAR calculators take into account scaling of various subjects. They aren't perfectly accurate but are generally pretty close (to within 0.5 ATAR points)
Our school is quite competitive (Sydney Tech), but the main reason is that the test was stupidly easy so a few dumb mistakes kills you. Hopefully I can make it back though...