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Why does the HSC syllabus and textbooks address the compound as ethylene if it's IUPAC nomenclature is ethene?

Re: Australian Maths Competition 2013 Awards are based on percentile, not benchmarks.

Re: Australian Maths Competition 2013 That's the answer I got. D: NOoooo did i get it wrong

Re: Australian Maths Competition 2013 Lol teach me your ways. HD again this year? Yup 14.5. I spent way too long on this question though :(

Re: Australian Maths Competition 2013 "Probably" never going to be 0 or 999. har har har How did you do in the competition Kurosaki? O:

Re: Australian Maths Competition 2013 Either you guys are way above my level or 1 extra year of experience makes a lot of difference D: I only got to around Q 17 confidently before I started to break and time was running out (I probably couldn't even do the last ~10 without time restrictions)

+1 my response

Take it from me who was in a similar position to you, researching to have their year 11/12 planned out for optimism (though this ideal is somewhat unfeasible): Everyone is different; you'll have to experiment. Go with the flow - you will learn about yourself and how best you perform. For...

14. Two rectangular garden beds have a combined area of 40 m^2. The larger bed has twice the perimeter of the smaller and the larger side of the smaller bed is equal to the smaller side of the larger bed. If the two beds are not similar, and if all edges are a whole number of metres, what is the...

I'm no expert; the process is complex and arduous but here is my input: School rankings don't directly affect your atar, but it IS indicative/ a guideline to the general performance of a school's cohort (which indeed has an effect). From the Board of Studies page, "The mean of the school...

Pfft distinction is not sucking :p

97% in 2U, 89% in MX1 (sigh - 100% was achievable but silly mistakes). Anyone else looking forward to the AMC (math comp) on august 1? :)

Switch to laser printers! :D Best decision I've made.

Okay after substitution, seems like the answers are wrong so I've edited them out.

n/x = [n/(x+5)] +6 and n/(x+5) = [n/(x+10)] +4 Solve for n Any help appreciated! Edit: Original question: When 5 new classrooms were built for a school, the average class size was reduced by 6. When another 5 classrooms were built, the average class size reduced by another 4. If the number...

Thanks guys :) Question proved to be really easy. For some reason yesterday I was thinking that 5 digit numbers could be < 600 haha :( Long day

Q: How many even numbers less than 600 can be formed using the digits 2,3,4,5,7,9 (no repetition)? My probability skills are very weak, can someone help me :( I tried drawing up a tree diagram to get an idea of how to approach the question, but it didn't help. (Ans: 36)

I'm pretty sure OP already said it was in the girl's best interested to do the HSC. Whatever happens, let her flourish without pressure. :)

ah, I was under the impression that for question one, the digits could be used multiple times t_t

Where'd you get these questions? I keep getting a different ans for 1 :(