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Recent content by suryashekhar

  1. S

    A level Biology: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Biology%20(9700)/9700_w10_qp_21.pdf Q 2 (b)(ii) Please
  2. S

    Mathematics: Post your doubts here!

    The curve y =(ln x)/(x + 1) has one stationary point. (i) Show that the x-coordinate of this point satisfies the equation x =(x + 1)/ln x and that this x-coordinate lies between 3 and 4. PLease post answer ASAP
  3. S

    Physics: Post your doubts here!

    A railway engine accelerates a train of total mass 800 tonnes (1 tonne = 1000 kg) from rest to a speed of 50 m s–1. How much work must be done on the train to reach this speed?A 1.0 × 106 J B 2.0 × 106 J C 1.0 × 109 J D 2.0 × 109 J
  4. S

    A level Statistics doubt??Post your doubts here!

    hey man why do they take 0.97 instead of 0.94?
  5. S

    A level Statistics doubt??Post your doubts here!

    The weights of letters posted by a certain business are normally distributed with mean 20 g. It is found that the weights of 94% of the letters are within 12 g of the mean. (i) Find the standard deviation of the weights of the letters. w11 61 q5(i):(
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