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  1. snipex

    Mathematics: Post your doubts here!

    Please help. Th train question in p2, how much time did it take yo pass the bridge!
  2. snipex

    Maths CIE 2013 oct/november Paper 21 help?!

    Whaaaat how is it 4.5!!!
  3. snipex

    Maths CIE 2013 oct/november Paper 21 help?!

    So you are in alwadi?
  4. snipex

    Maths CIE 2013 oct/november Paper 21 help?!

    Also the questio was sking about time of train to pass the bridge so I couldnt think of any way to solve it except by adding 120 and 20 then dividing by 40
  5. snipex

    Maths CIE 2013 oct/november Paper 21 help?!

    It was 2 marks cool down.
  6. snipex

    Maths CIE 2013 oct/november Paper 21 help?!

    So you know him?
  7. snipex

    Maths CIE 2013 oct/november Paper 21 help?!

    I dont think they this is the answer because they wont bring such complicated question. Right?
  8. snipex

    Maths CIE 2013 oct/november Paper 21 help?!

    I asked mechanics teacher about the train question and he said the answer is 3.5 sec
  9. snipex

    maths p21!!

    4pyr^2/2=2pyr^2 Then 286py=22r^2 Squuare root 286/22 then you get 11.1
  10. snipex

    maths p21!!

    Wrong the radius was 11.1
  11. snipex

    Maths CIE 2013 oct/november Paper 21 help?!

    See, firs the length was 20cm divided in ratio 2:3, so first distance is (20x2/5=8) after that you have vertical length as 12 so divide it by 2 to get 6cm. After that(2xtan^-1x6/8 to get final answer 73.7
  12. snipex

    Maths CIE 2013 oct/november Paper 21 help?!

    For statrters your answer is wrong bec the correct equation is(tan=6/8)
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