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  1. riVa0o

    how many people??

    is it just me or does hatz0r only post to bag ppl out o.O eheh yes, neways, back to sydney boys (stop the fortians hoggin the forum =P)... we traditionally have quite a few doin 4u maths... last year i think we had 4 classes... i think its abt the same this year- we got 123 people doin 4u...
  2. riVa0o

    n00bie complex number q's

    oooh n00bie complex no.s! finally one i *might* be able to post up before anyone else =D |z+8| = |z-6i| (x+8)^2 + y^2 = x^2 + (y-6)^2 (just using |z-a-bi| = sqrt[(x-a)^2 + (y-b)^2]) expand and you'll end up with 4x+3y+7 = 0 second part, pt for -8 is (-8,0) pt for 6i is (0,6) and line...
  3. riVa0o

    Geometry/Complex Numbers

    does that mean we could just write that ratio thing in an exam rather than all that extra stuff ><
  4. riVa0o

    Geometry/Complex Numbers

    this is probably a bit old seeing as everyone done it, but can someone explain to me why you can't practically finish the question off once you find that triangle DZC|||TriangleEOC? because the sides are in the ratio of 2:1, so wouldn't it follow that OC=2DC and therefore DO=OC??
  5. riVa0o

    circle geo question

    iii) we kno triangle ABD||| triangle EBC so AB/EB = AD/EC = DB/BC ...(1) (don't make me write why ><) we also kno that triangle ABE ||| triangle DBC so AB/DB = BE/BC = AE/DC ...(2) so from (1) AD.BC = DB.EC and from (2) AB.DC = DB.AE adding the two equations AB.DC + AD.BC = DB.EC +...
  6. riVa0o

    Criminal Justice Issue!

    ermm i dunno if it was just the specific guidelines my teacher set, but i'm doing industrial manslaughter for my criminal justice issue... which seems kinda out of place compared to what everyone else is doing here!
  7. riVa0o

    Twi

    i thought the numbers on the TWI were an index.. so that probably means they have a 'base' year which would be given "100" and the subsequent years would be compared to this base year... so in other words if the 'base year' was 100, and the year you have is around 50, then the value of the $A...
  8. riVa0o

    its official...best school = james ruse, worst = Joeys and NSGH as voted by you!

    Depends what you define as nerds really... personally i don't think anyone can be bothered to study 10 hours a day, let alone 3 or 4 hours unless they had assessments coming up. In fact, it'd be STUPID, because if you were smart enough to get into ruse in the first place, you wouldn't even have...
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