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Recent content by alamgir

  1. alamgir

    Chemistry 9701 7th may ?

    Relative Abundance 45% and 55% is correct, according to my chem teacher.
  2. alamgir

    Paper 42 (13th May) - Full Solutions

    about finding the profit, Sir i did all the working correct showing the correct answer in the working but i wrote 84 instead of 184 in final answer line but i have done all the working as done in the paper 4 post by you.
  3. alamgir

    Paper 42 (13th May) - Full Solutions

    For the major arc i have made an error i multiplied 39 by 2 insted of 4 but all my other working is correct. Will i loose more than 1 mark??
  4. alamgir

    Mathematics: Post your doubts here!

    That was a tricky question. well you have to use the frequency density formula that is (freq/column width)=freq density The freq density is the height but here as it is mentioned in the question that for interval 60<t<80 it is 2.8 using the formula you get 0.7 so divide 2.8 by 0.7 you will get...
  5. alamgir

    Mathematics: Post your doubts here!

    Its 16 because they gave the length scale factor which is 4 and to get the area scale factor just square it 4^2 is 16 thats the area scale factor and to get any volume scale factor just cube the answer for the length scale factor
  6. alamgir

    Mathematics: Post your doubts here!

    Lets see first ill just write the vectors LO+OV -(3/4)U + V + (1/3)U -(1/3)V simplify it by adding the vectors you will get (-5/12)U + (2/3)V it a bit confusing but hope so it helps.
  7. alamgir

    Mathematics: Post your doubts here!

    1-2*(1/x) 1-(2/x) (1/1)-(2/x) make the denominators same. then you will get an equation like (x-2)/x nd its done. hope this does it.
  8. alamgir

    I'm an IGCSE Maths Teacher - Post your questions here.

    thank you verry much i was confused because i thought we just have to do (23/90*13/89).. thank u again.
  9. alamgir

    I'm an IGCSE Maths Teacher - Post your questions here.

    sorry its E(ii) not D(ii)
  10. alamgir

    I'm an IGCSE Maths Teacher - Post your questions here.

    Oct/Nov 2012 variant 41 question 3 d(ii). Thank in advancee
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