Math things

Discussion in 'General Discussion' started by Nerien, Apr 25, 2011.

  1. Offline

    Nerien "Bad Boy"

    Bah found my error now <.<
    3 and 2 is wrong only thought 2 was wrong, way to long since I done stuff like this.
    Lesson learned and might as well put in a funny thing I ran into instead.:p

    48/2(9+3)=?
    Is the solution 2 or 288?


    Ignore the spoiler part unless you want to laugh a bit at how stupid I was <.<

    I need to figure out which of the 4 expressions that I got that are correct

    1. y = x/3 +1 and x - 3y + 3 = 0 are equations for the same straight line.

    2. The line x - 3y + 3 pass trough origin (0, 0).

    3. The line x - 3y + 3 = 0 pass trough the x-plane at (0 ,1)

    4. The line x - 3y + 3 = 0 is parallel with the line 2x - 6y = 3

    So I can only manage to get 1, 3 and 4 to be correct but apparently that is false.

    Anyone able to give me any hints to as why I get this wrong it's making me really annoyed.

    Wolfram alpha links for all the expressions to see the coordinate systems.

    1. http://www.wolframalpha.com/input/?i=x−3y+3=0, y = x/3 + 1

    2, 3. http://www.wolframalpha.com/input/?i=x−3y+3=0

    4. http://www.wolframalpha.com/input/?i=x−3y+3=0, 2x−6y=3
  2. Offline

    Aspira Admin Officer

    I haven't done maths as complicated as this in at least a couple of years, but I can try and help.

    What one are you actually stuck on ? I can't really work it out from your post as to which part you need the help with, or is it all of it ?
  3. Offline

    Nerien "Bad Boy"

    Got it solved I thought epression 3 was true since the line crossed trough the y-plane at (0, 1) but for the line to cross trough the x-plane it must look like (y, 0) <.<

    The new thing is a funny question :p
  4. Offline

    Aspira Admin Officer

    Ah nvm then, saves me digging out my textbooks :p
  5. Offline

    Doodle Bush Whacker!

    that math problem is actually a internet meme. Put that in any math discussion forums and world war 3 starts lol (if i remember it correctly, cba looking it up!)

    oh and also even using different models of calculators (like the TI 83 or 84) gives you different results =)
  6. Offline

    Aspira Admin Officer

    Bracketed content first, division before multiplication.
  7. Offline

    Nerien "Bad Boy"

    Yeah I know found it my first time on the teamliquid forums 98 pages discussing it :p
  8. Offline

    TOMMCAT Veteran BOON

    288 is the answer
  9. Offline

    Alaisy Veteran BOON

    My math instructor forced me to calculate without a calculator, thus 288 was pretty much a very quick answer for me (so what aspira said). My TI-83 gave 288 as answer aswell. :p
  10. Offline

    Tal The Architect

    Don't people learn BODMAS any more?

    Order of mathematics operations:
    Brackets Of* Division Multiplication Addition Subtraction

    *of = powers
  11. Offline

    Alaisy Veteran BOON

    nope, it would be called Haakjes van Divisie Vermenigvuldiging Optellen Aftrekken :p (HVDVOA) not so easy to remember :/
  12. Offline

    Aspira Admin Officer

    I remember getting taught that in primary school. Must be a UK thing.
  13. Offline

    Fizzee Veteran BOON

    0.o you lost me when you started using numbers.

    Damn mathlexia
  14. Offline

    Mizou Community Member

    under my arms grow hairs :( can u solve the issue plz ?
  15. Offline

    Acina Admin Officer

    Yup same here, Chops probably learnt it as well but with an abacus :p

    Sent from my iPhone using Forum Runner
  16. Offline

    Acina Admin Officer

    I'd go see a doctor about that, dangerous stuff :)

    Sent from my iPhone using Forum Runner
  17. Offline

    Alaisy Veteran BOON

    set them on fire, fire cleanses everything. Also Fire > Hair (Fire is super effective)!
  18. Offline

    Mizou Community Member

    tried it today alaisy and it actually worked, holy crap it smelled like shit but they are gone !

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