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  1. Dudu

    Mathematics: Post your doubts here!

    Someone help me with this? 3) An oil pipeline under the sea is leaking oil and a circular patch of oil has formed on the surface of the sea. At midday the radius of the patch of oil is 50 m and is increasing at a rate of 3 metres per hour. Find the rate at which the area of the oil is...
  2. Dudu

    Mathematics: Post your doubts here!

    I'm not sure i understand it either by if you did the first part correctly you should have no trouble finding the answer. You already found that OC = r x Sin θ and BC = r x Cos θ r = 10 and θ = Pie/5 So: 10 x Sin (pie/5) = OC = 5.87 and: 10 x Cos (pie/5) = BC = 8.09 5.87 x 8.09 x 1/2 = 23.7
  3. Dudu

    Mathematics: Post your doubts here!

    Ok. So we have OA (1i, -2j, 2k) and OB (3i, pJ, qK) for i) It says both are parallel. The clue is the "i" in both vectors. It goes from 1 to 3. Therefore "x3" OA to get to OB. So -2 x "3" = -6 = p 2 x "3" = 6 = q for ii) it says 90 degrees which means the dot product =0 (1,-2, 2) and (3...
  4. Dudu

    Mathematics: Post your doubts here!

    Just use the discriminant. b^2-4ac = " " "=0" if one root or equal roots "<0" if no roots ">0" for two roots
  5. Dudu

    Mathematics: Post your doubts here!

    OD is (4i+4J+5k) Firstly to get to O to D you need to go 5 steps UPWARDS (and it says top is 5m above base) So K = 5 Then DE = 6 and OA =14 so the difference is 8 there. so the two bits at the side are 4 each. (4 + 8 + 4 = 16) So we need to move in the "i" direction 4 steps. i = 4 Finally...
  6. Dudu

    A Level Economics:

    Can someone explain this to me please? http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Economics (9708)/9708_w11_ms_23.pdf 2)a)Explain, with the help of a diagram, how an economy can in the short-run and long run enjoy consumption beyond its current production...
  7. Dudu

    How was AS Applied ICT /12 ?

    Awesome paper indeed. :)
  8. Dudu

    Business Studies(9707) Post your doubts here

    ARA: Any reasonable answer. Comes often in Biz MSchemes as there can be many different correct answers for a question.
  9. Dudu

    Mathematics: Post your doubts here!

    In all math papers, you know how it says on the first page... always give answers to 3SF unless stated otherwise? Can you lose marks for the Final answer (A1) if you dont?
  10. Dudu

    Mathematics paper 6 (Stats)

    Same problem here. I can get n=40. But clueless on what formula they've used to get SD.
  11. Dudu

    Economics, Accounting & Business: Post your doubts here!

    How do you calculate Capital (Accumulated Fund) from this? Bloody 6 marks its worth. http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Accounting%20(9706)/9706_w09_qp_21.pdf Answer is: 246 630
  12. Dudu

    Economics, Accounting & Business: Post your doubts here!

    Could you please explain the over absorbed part?
  13. Dudu

    Economics, Accounting & Business: Post your doubts here!

    Ahh. For some reason i was using the Closing Balances. Cheers mate :)
  14. Dudu

    Economics, Accounting & Business: Post your doubts here!

    How do you get the capital figure from this? http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Accounting (9706)/9706_s12_qp_23.pdf Q 1 Answer is 212880.
  15. Dudu

    Economics, Accounting & Business: Post your doubts here!

    http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Accounting%20(9706)/9706_w10_qp_21.pdf Q)1 Can someone help me calculate The Bank Value?
  16. Dudu

    Grade Threshold Question

    Here's an example for Accounting: http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Accounting (9706)/9706_w12_gt.pdf "The maximum total mark for this syllabus is 340 for A Level and 170 for AS Level." Why is the total marks for AS Level 170? Paper 1 (30) + Paper...
  17. Dudu

    Economics, Accounting & Business: Post your doubts here!

    I would assume it depends on how much your mark is above the minimum mark required for A for paper 2 or vice versa but yes i do believe you can. Could be wrong though
  18. Dudu

    Economics, Accounting & Business: Post your doubts here!

    I think this is how you do 23) Stock Turnover = C.O.S/AVG STOCK so for Option A we have X/1000 = 8 So C.o.s for A is 8000 Option A Markup is G.P/C.o.s ... Mark up 15% given. GP/8000=0.15 GP = 1200 Do the same for all. D should be the highest GP.
  19. Dudu

    Economics, Accounting & Business: Post your doubts here!

    Getting a lil confused now. Help please! You know how you can have B/D and C/D Advanced Prepayment and the same for owings? How do you know which goes to which side for different accounts?
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