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  1. Hello090078601

    Mathematics: Post your doubts here!

    Ohhh, I get it now! Thank you! :) So I can also take 3 as n but that'll be equal to (18+9+30) right?
  2. Hello090078601

    Mathematics: Post your doubts here!

    Um, How'd you come up with the second equation? How did you figure out it was equal to 27 and n is 2?
  3. Hello090078601

    Mathematics: Post your doubts here!

    Thank you! :D and maybe it is simultaneous, Idk I suck at math :(
  4. Hello090078601

    Mathematics: Post your doubts here!

    I got the first one after some thinking :p But the second part (9 cii) I can't seem to figure it out. It's not simultaneous equations cuz I looked at the mark scheme and atleast understood that much. Could you try solving it? I'd be ever so grateful! It's for 5 whole marks! :/
  5. Hello090078601

    Maths Paper 4.. " How On Earth" DOUBTS QUESTIONS!

    Need help ASAP! I'm stuck on this question, from O580/43/O/N/13 (October November 2013, 43, IGCSE) It's Question 9ci and 9cii c) The total number of lines in the first n diagram is 1/2n^3 + pn^2 + qn i) When n=1, show that p+q=8.5 ii) By choosing another value of n and using the equation...
  6. Hello090078601

    Mathematics: Post your doubts here!

    GUYS NEED HELLPPP........ I'm stuck on this question, from O580/43/O/N/13 (October November 2013, 43, IGCSE) It's Question 9ci and 9cii c) The total number of lines in the first n diagram is 1/2n^3 + pn^2 + qn i) When n=1, show that p+q=8.5 ii) By choosing another value of n and using...
  7. Hello090078601

    Maths Post your doubts and your exam date mine is may 6 P2 and may 12 P4

    I'm stuck on this question, from O580/43/O/N/13 (October November 2013, 43, IGCSE) It's Question 9ci and 9cii c) The total number of lines in the first n diagram is 1/2n^3 + pn^2 + qn i) When n=1, show that p+q=8.5 ii) By choosing another value of n and using the equation in part (c)(i)...
  8. Hello090078601

    Mathematics: Post your doubts here!

    I'm stuck on this question, from O580/43/O/N/13 (October November 2013, 43, IGCSE) It's Question 9ci and 9cii c) The total number of lines in the first n diagram is 1/2n^3 + pn^2 + qn i) When n=1, show that p+q=8.5 ii) By choosing another value of n and using the equation in part (c)(i)...
  9. Hello090078601

    Mathematics: Post your doubts here!

    It's actually 128, not 288 but thanks for your help! I appreciate it.
  10. Hello090078601

    Maths Paper 4.. " How On Earth" DOUBTS QUESTIONS!

    Omg, Even 9 cii looks hard, I have yet to solve that :/ I hope either the variant I'm gonna give I find easy or the threshold is really low :c
  11. Hello090078601

    Maths Paper 4.. " How On Earth" DOUBTS QUESTIONS!

    Omg! I'm so stupid I thought that you were just multiplying it with 75 and not 75% but then my slow brain acknowledged that you wrote 46.875 '%'. Omg, I assure you I'm not this thick headed when it comes to other subjects :P Thanks for your help guys :D
  12. Hello090078601

    Maths Paper 4.. " How On Earth" DOUBTS QUESTIONS!

    Umm, I'm confused :s What do you mean by 'total percentage of features'? Wasn't that given as 62.5? For features?? Why did you multiply it with 75? Because if you are subtracting 100 from 25%, Shouldn't you multiply with 75% instead of just 75? God, I'm so flustered atm.
  13. Hello090078601

    Maths Paper 4.. " How On Earth" DOUBTS QUESTIONS!

    Lol, no need to apologize. They do show 288 at the right hand column but the final answer is written as 128. (P.S. Don't you just hate math?)
  14. Hello090078601

    Maths Paper 4.. " How On Earth" DOUBTS QUESTIONS!

    Hi! Thanks for replying to my thread. What you did, made sense to me but in the mark scheme the final answer is 128 :/ Why? I took a screenshot and uploaded it, I'd be grateful if you could maybe check it out and hopefully figure out why it's 128 cuz apparently I'm horrible at math :(
  15. Hello090078601

    Maths Post your doubts and your exam date mine is may 6 P2 and may 12 P4

    Hi, I don't know how this works because I'm new here but I've been stuck on a mathematical question for like the past hour and it's driving me insane. My Math IGCSE is in three days. Anywho, this question is from October/November 2013, Paper 43 Question 1b. The question is: In a car magazine...
  16. Hello090078601

    Maths Paper 4.. " How On Earth" DOUBTS QUESTIONS!

    Hi, I don't know how this works because I'm new here but I've been stuck on a mathematical question for like the past hour and it's driving me insane. My Math IGCSE is in three days. Anywho, this question is from October/November 2013, Paper 43 Question 1b. The question is: In a car magazine...
  17. Hello090078601

    Mathematics: Post your doubts here!

    Hi, I don't know how this works because I'm new here but I've been stuck on a mathematical question for like the past hour and it's driving me insane. My Math IGCSE is in three days. Anywho, this question is from October/November 2013, Paper 43 Question 1b. The question is: In a car magazine...
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