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  1. asd

    Maths, Addmaths and Statistics: Post your doubts here!

    Suppose the original price of the car is x. 30% of x when added to the original cost = $7040 So, (x)(30/100) + x = 7040 0.3x + x = 7040 x = 7040/1.3 = 5415.38 This is the original cost, and to to find the profit subtract this from 7040, which should give 1624.62 = $1625 (to the nearest dollar).
  2. asd

    Biology; Chemistry; Physics: Post your doubts here!

    0 ohms, the resistance actually.
  3. asd

    Biology; Chemistry; Physics: Post your doubts here!

    A is the answer, well i never used that V(out) formula. Here is the explanation: see the total em.f is 4V, if the Potential divider is at highest resistance, there will be 2V-2V p.d across both resistors because in this case the resistance of both becomes the same and the voltage will be...
  4. asd

    You're welcome! :D

    You're welcome! :D
    • asd
    • Profile post comment
  5. asd

    Maths, Addmaths and Statistics: Post your doubts here!

    Look i think when you know the ratio of the other 2 triangles ie. 16/25 the remaining area should be 9 to make it 25 (16 +9 = 25). Note that there are 3 triangles that contribute to this area, so divide by 3. The answer you will get already refers to area, so don't square it, and divide this by...
  6. asd

    Maths, Addmaths and Statistics: Post your doubts here!

    1- It depends whether it comes or not, 2- even if it does and let's suppose you're gonna lose approx. 15 marks (god forbid), it would be 165/180, unless you make other mistakes. Still an A*. 3- If you make other mistakes too, like of about 10 marks (5 marks in p1, 5 in p2) and loci of 5 marks...
  7. asd

    Maths, Addmaths and Statistics: Post your doubts here!

    probability for any number in one spin = 1/5 probability for that number in 3 spins = 1/5 x 1/5 x 1/5 = 1/125 Now, since there are 5 numbers it can be 1 OR 3 OR 5 OR 6 OR 7 In cases of "OR" we add the possibilities, therefore = 1/125 x 5 = 1/25 :D
  8. asd

    Wow, this is very much like fb...

    Wow, this is very much like fb...
    • asd
    • Profile post
  9. asd

    Maths, Addmaths and Statistics: Post your doubts here!

    http://tinypic.com/r/2md2per/6
  10. asd

    Biology; Chemistry; Physics: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20O%20Level/Biology%20(5090)/5090_w07_qp_6.pdf
  11. asd

    Biology; Chemistry; Physics: Post your doubts here!

    Don't run away, you gotta give me the water cooler!
  12. asd

    Biology; Chemistry; Physics: Post your doubts here!

    The guy above me (ashiqbal) is absolutely correct. And don't follow those wiki/yahoo answers, they're not always correct. see the girl's comment below that answer: I'm sorry, but there are a few corrections to the answer directly above mine..if this comes on time. See, the salivary amylase is...
  13. asd

    Biology; Chemistry; Physics: Post your doubts here!

    It can diffuse, though not as easily as glucose. Use your mind, there's no maltase in saliva, where will glucose come from?
  14. asd

    Biology; Chemistry; Physics: Post your doubts here!

    smaller molecules R: particles etc. pass through ; water always goes through ; so does glucose/maltose/reducing sugar ; not sucrose/starch ;
  15. asd

    Biology; Chemistry; Physics: Post your doubts here!

    ... :|
  16. asd

    Biology; Chemistry; Physics: Post your doubts here!

    maltose can't? well it has to because there's no way maltose will be broken down to glucose since there's no maltase there!
  17. asd

    Biology; Chemistry; Physics: Post your doubts here!

    So i guess i was right. Maltose from digestion of starch by amylase! (see the question says there is saliva in the tubing)
  18. asd

    Biology; Chemistry; Physics: Post your doubts here!

    In equilibrium state, maltose will be present in both, visking tubing and in sol. in test tube. It can't be that all of it diffuses out of the tubing. It has to be in both.
  19. asd

    Biology; Chemistry; Physics: Post your doubts here!

    Are you sure? because by the time one whole day is gone starch will be digested by the salivary amylase to maltose which will then diffuse out to water in test tube (although not wholly)
  20. asd

    Biology; Chemistry; Physics: Post your doubts here!

    Slip rings are used so that the wires don't jumble up or wind onto each other. Split rings to reverse the current so that continuous 360 degrees rotations are achieved.
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