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Recent content by Sarah22

  1. Sarah22

    Maths, Addmaths and Statistics: Post your doubts here!

    No prob... :)
  2. Sarah22

    Maths, Addmaths and Statistics: Post your doubts here!

    (3×60)+(4×40)+(5×30) (6×60)+(4×40)+(0×30) =(490) (520)
  3. Sarah22

    Maths, Addmaths and Statistics: Post your doubts here!

    Ppl if any1 can pls solve this for me a bit in detail.. it will be a great help.. thank you.. A barrel of oil when 2/5 full, weighs 12kg. When it is 1/4 full, its weight is 8kg. Find the weight of the empty barrel and its weight when the barrel is full.
  4. Sarah22

    Maths, Addmaths and Statistics: Post your doubts here!

    I didnt get this question. . Please if you could be a bit more clear.. Thank you..
  5. Sarah22

    Maths, Addmaths and Statistics: Post your doubts here!

    A small help ppl.. 1. A barrel of oil when 2/5 full, weighs 12kg. When it is 1/4 full, its weight is 8kg. Find the weight of the empty barrel and its weight when the barrel is full. 2. By 12 noon a driver has completed 1/4 of a journey. By 2.30 p.m he has travelled 3/5 of it. If his speed is...
  6. Sarah22

    Mathematics: Post your doubts here!

    Oops sorry.. Not the 3(a), its 3(ii)
  7. Sarah22

    Mathematics: Post your doubts here!

    http://papers.xtremepapers.com/CIE/...S Level/Mathematics (9709)/9709_s11_qp_12.pdf Question- 10 (a) http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20%289709%29/9709_w11_qp_12.pdf Question- 3(a) Please.. Thank You
  8. Sarah22

    Mathematics: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20%289709%29/9709_s11_qp_12.pdf Question- 10 (a) Please.. Thank You
  9. Sarah22

    Mathematics: Post your doubts here!

    Haha.. Me too
  10. Sarah22

    Mathematics: Post your doubts here!

    (i) f(x)=x^2-4x+7 For this you can follow the usual method, (x-2)^2-4+7 (x-2)^2+3 Range is: f(x)>=3. You can see this form the answer (x-2)^2+3 (ii) f−1(x)=y y=(x-2)^2+3 square root of y-3=x-2 x=square root of (y-3)+2 then you interchange x with y y=square root of (x-3)+2, which is your f-1(x)
  11. Sarah22

    Mathematics: Post your doubts here!

  12. Sarah22

    Only as high as I reach can I grow, only as far as I seek can I go, only as deep as I look can I...

    Only as high as I reach can I grow, only as far as I seek can I go, only as deep as I look can I see, only as much as I dream can I be.
  13. Sarah22

    Mathematics: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20%289709%29/9709_w10_qp_12.pdf Question- 6(ii), 7(iii), 11(ii) please.. Thank you..
  14. Sarah22

    Mathematics: Post your doubts here!

    Thank you very much.. (y)
  15. Sarah22

    Mathematics: Post your doubts here!

    Thank you.. I understood the gradient part, but I dont quite get the angle difference part.. Only and only if u dont mind, can u explain that part
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