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For each half equation in a redox reaction, do the number of electrons need to be the same? This is for Yr 11 metals.

Can anyone solve the following question? I've been stuck on it for ages... Find the values of a and b if the parabola a(x+b)^2 - 8 is tangential with y = 2x at (4,8).

I have a fervent left-wing, anti-conservative populist stance and am in extreme favour of Simplified characters. All that crap about bad writing aesthetics from the Honkies and Taiwanese is just an excuse to uphold their elitist views and distinguish themselves from the Mainland community ...

I find it really frustrating that all the topics in Cambridge 3U Yr 11 are presented without any indication of their weighting in terms of the Prelim and HSC courses. I want to do all the Prelim topics first as I'm in year 11 next year, yet I have the feeling that much of the stuff is more...

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I'm doing accelerated this year and I'm wondering what mark I need for Band 6? I want to do a Distinction course. Thanks. And that exam wasn't particularly easy for me either. I'm not really confident about getting a Band 6.

I'm doing accelerated SDD this year, and I'm currently 3rd-6th in a class of 14. I go to James Ruse, so it's very hard to beat some of my rivals. Will I be disadvantage compared to other schools in which I could easily come much higher? By the way, how do they scale internal HSC marks between...

I got subject selections for Yr 11. There are 2 units left for a HSIE subject, and I'm not sure whether to do Geo or Mod.His. I do well in and am interested in both. However, I'm know lots more about History than Geo. The main deterrent for me is that 48 people are doing Mod.His while only 7...