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  1. Namehere

    Mathematics: Post your doubts here!

    If you give me an example to try out maybe I could help you.
  2. Namehere

    Mathematics: Post your doubts here!

    But, is it right? :D
  3. Namehere

    Mathematics: Post your doubts here!

    Calculator in radians mode: CD^2 = (10)^2 + (10)^2 -2(10)(10)cos0.8 CD^2 = 60.66 CD = 7.79 cm
  4. Namehere

    Mathematics: Post your doubts here!

    cosine rule?
  5. Namehere

    Mathematics: Post your doubts here!

    100%! :DD Nah... depends on the paper. Do wayy too many siily mistakes so usually around 70/75.
  6. Namehere

    Mathematics: Post your doubts here!

    Thats nothing! :DD (just kidding)
  7. Namehere

    Mathematics: Post your doubts here!

    Well, atleast he tried to help... he can still make mistakes. It´s up to the receiver to believe what is being told to him/her and this usually comes from believing in yourself, researching and obviously by simply looking how confident the answer you are telling to him/her looks like.
  8. Namehere

    Mathematics: Post your doubts here!

    The derivative of 4/(3x-2) dx = -12/(2-3x)^2
  9. Namehere

    Mathematics: Post your doubts here!

    Integral of 4/(3x-2) dx = (4/3)log(3x-2) + c
  10. Namehere

    Chemistry: Post your doubts here!

    Nitrogen triple bond is very strong.
  11. Namehere

    Mathematics: Post your doubts here!

    NOONE IS ANSWERING ME THIS QUESTION AND I REALLY NEED AN EXPLANATION FOR IT (HENCE THE CAPS). Its Q8(b), I get the diagram part, but dont know how to find the least value. Thank you in advance!
  12. Namehere

    Chemistry: Post your doubts here!

    Easy Tip: Never simplify until the last moment!
  13. Namehere

    Chemistry: Post your doubts here!

    However, if you dont take that into account, you get that the ratio of C: H: O is 1: 1.3344: 1.166 if you times all by 6 so you get integer numbers for all of them -> 6: 8.01: 6.996, which simplifies to 6:8:7 Thus, the empirical formula is C6H8O7, which is correct, since E330 is known for...
  14. Namehere

    Chemistry: Post your doubts here!

    If you add the percentages 37.5 + 4.17 + 58.3 you get 99.97, so there is a 0.03% missing from somewhere...
  15. Namehere

    Mathematics: Post your doubts here!

    Please someone solve Q8b, just how to find the least value for z-w with explanations of why you are doing each step pleasee!
  16. Namehere

    Mathematics: Post your doubts here!

    Yes please someone explain this question with explanations for every step. I know how to do the diagram, im just having trouble finding the least value for z-w.
  17. Namehere

    Chemistry: Post your doubts here!

    Acyl chlorides are used because of their high reactivity, meaning it will also react the same way as a carboxylic acid does.
  18. Namehere

    Chemistry: Post your doubts here!

    Colour is always due to the halogen, not the halide. Therefore I2. (You know this, cuz with NaCl you don´t see the yellow-green colour of Cl2, because you have the halide Cl-).
  19. Namehere

    Physics: Post your doubts here!

    I feel stupid :D
  20. Namehere

    Physics: Post your doubts here!

    I dont get it, each square is 0.4 and the discharge occurs over 4 squares so, 0.4*4 = 1.6V Could you explain it please.
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