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    (Original post by jn13)
    in question 7 i copied out the equation wrong but did working out and everything, how many marks do you think i'd lose?
    Every single one
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    (Original post by StrangeBanana)
    Question Paper, courtesy of Nels98: http://www.thestudentroom.co.uk/show...819&p=55753987

    1. r = \sqrt{\dfrac{A}{\pi(x+y)}} (2 marks)

    2. y = 4x + 10
    Intersection with axes:
    (0, 10), (-2.5, 0)
    (5 marks)

    3a. 1 (1 mark)

    b. 0.6 (3 marks)

    4. x < -1.2 (3 marks)

    5. (7/8,19/8) (4 marks)

    6a. 6\sqrt{5} - 31 (3 marks)

    b. 22\sqrt{2} (2 marks)

    7. 81x^4 - 216x^3 + 216x^2 - 96x + 16 (4 marks)

    8a. Use Pythagoras (2 marks)

    b. x = \dfrac{2+2\sqrt{11}}{5} (3 marks)

    9a. False because rhombuses/kites can have diagonals intersecting at 90 degrees. Should be => (2 marks)

    b. False; many examples where x^2 is an integer and x is not, e.g. x^2 = 2 so x = \sqrt{2}, which isn't an integer. Should be <= (2 marks)

    10a. Should hit x-axis at -3, 2 and 5, y-axis at 30 (3 marks)

    b. Expand brackets (2 marks)

    c. Translation 36 units downward (2 marks)

    d. (x+1)^2(x-6) (5 marks)

    11a. centre is (10,2), r = 5\sqrt{5} (2 marks)

    b. A(-1, 0), B(21, 0), D(0, -3), E(0, 7) (4 marks)

    b. y = 3x - 28 (6 marks)

    12a. k &gt; 14/3 (5 marks)

    b. 3(x+2)^2 + 1 (5 marks)

    c. k = 5 (2 marks)

    Enjoy!
    Agree with all except question 1. Question states r > 0. Thus it should be +square root.
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    (Original post by Jim997)
    Agree with all except question 1. Question states r > 0. Thus it should be +square root.
    The square root sign already gives the positive root, you don't have to put the + sign.
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    hmm, ok. So i worked out that i think i may get between: 56-61. I forgot some answer and it also depends on how strict the mark scheme is. I need 82 ums. hmmm, i do hope.
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    how many marks did people get based on the mark scheme?
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    (Original post by StrangeBanana)
    The square root sign already gives the positive root, you don't have to put the + sign.
    What if i put the answer>r. damn, thats that mark gone.
    I might have put it equal first and below that done >r but i doubt it.
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    hey, on one if the questions where u had to find x in Surd form, i didn't simplify...would i loose marks? The question didnt say simplest form
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    For 10c. I put my answer as a column vector with 0 on top and -36 on the bottom. Is this correct?
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    (Original post by Velocity_)
    What if i put the answer>r. damn, thats that mark gone.
    I might have put it equal first and below that done >r but i doubt it.
    What like this:

    \sqrt{\dfrac{A}{\pi(x+y)}} &gt; r
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    (Original post by Jim997)
    Every single one
    damn not even method marks ?? all i did was copy +1 instead of -1 :'(
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    (Original post by StrangeBanana)
    What like this:

    \sqrt{\dfrac{A}{\pi(x+y)}} &gt; r
    :/ yea... that was so stupid.
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    (Original post by Connorbwfc)
    For 10c. I put my answer as a column vector with 0 on top and -36 on the bottom. Is this correct?
    aye

    (Original post by Velocity_)
    :/ yea... that was so stupid.
    Yeah, that's not right. Don't worry, everyone brain-farts occasionally.
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    do you loose a mark for not simplifying? even if the question doesnt say in simplest form?
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    (Original post by hajarjarir)
    hey, on one if the questions where u had to find x in Surd form, i didn't simplify...would i loose marks? The question didnt say simplest form
    I didn't simplify it because it didn't say to. I didn't want to lose marks simplifying in for no reason so no you wouldnt lose marks!
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    (Original post by Connorbwfc)
    For 10c. I put my answer as a column vector with 0 on top and -36 on the bottom. Is this correct?
    I did the same. I think so!
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    If I didn't simplify the coordinates down in question 5 and left them as x=14/16 and y=38/16 i'll still get the marks right?
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    (Original post by hajarjarir)
    do you loose a mark for not simplifying? even if the question doesnt say in simplest form?
    I don't think you do, there have been past exam questions where you don't lose marks for leaving it unsimplified. I think the rule of thumb is if it doesn't say "simplest form", you're alright (I could be wrong).
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    (Original post by StrangeBanana)
    Question Paper, courtesy of Nels98: http://www.thestudentroom.co.uk/show...819&p=55753987
    Props to Mathbomb for writing this with me

    1. r = \sqrt{\dfrac{A}{\pi(x+y)}} (2 marks)

    2. y = 4x + 10
    Intersection with axes:
    (0, 10), (-2.5, 0)
    (5 marks)

    3a. 1 (1 mark)

    b. 0.6 (3 marks)

    4. x &lt; -1.2 (3 marks)

    5. (7/8,19/8) (4 marks)

    6a. 6\sqrt{5} - 31 (3 marks)

    b. 22\sqrt{2} (2 marks)

    7. 81x^4 - 216x^3 + 216x^2 - 96x + 16 (4 marks)

    8a. Use Pythagoras (2 marks)

    b. x = \dfrac{2+2\sqrt{11}}{5} (3 marks)

    9a. False because rhombuses/kites can have diagonals intersecting at 90 degrees. Should be => (2 marks)

    b. False; many examples where x^2 is an integer and x is not, e.g. x^2 = 2 so x = \sqrt{2}, which isn't an integer. Should be <= (2 marks)

    10a. Should hit x-axis at -3, 2 and 5, y-axis at 30 (3 marks)

    b. Expand brackets (2 marks)

    c. Translation by the vector
    \begin{pmatrix}

0 \\

-36

\end{pmatrix} (2 marks)

    d. (x+1)^2(x-6) (5 marks)

    11a. centre is (10,2), r = 5\sqrt{5} (2 marks)

    b. A(-1, 0), B(21, 0), D(0, -3), E(0, 7) (4 marks)

    c. y = 3x - 28 (6 marks)

    12a. k &gt; 14/3 (5 marks)

    b. 3(x+2)^2 + 1 (5 marks)

    c. k = 5 (2 marks)

    Enjoy, hope you all got what you wanted!
    Thanks very much for that - I think I only may have dropped 4ish marks (fingers crossed).
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    What was question 6 again? I think I potentially lost two marks there, I can't remember the question xD think I lost maybe 3 marks overall but I don't know xD
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    (Original post by thechemistress)
    What was question 6 again? I think I potentially lost two marks there, I can't remember the question xD think I lost maybe 3 marks overall but I don't know xD
    theres the paper attached
 
 
 
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