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AQA Mathematics MD01 Decision 1 – Friday 24th June [Exam Discussion Thread] Watch

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    (Original post by -jordan-)
    There was no answer, you just had to do the algorithm. But I did get AJ as 13. It said find the shortest distances to all the fair ground rides or something like that. The next question was 1 mark and was the shortest route from A to G.
    A-J was 15
    A-G was 13

    point E or D the one you had to make a bridge with was 9

    the bridge reduced distance to G but distance to J didnt change.

    this tells you x>>3 and x<4

    so x=3
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    (Original post by Busted838)
    A-J was 15
    A-G was 13

    point E or D the one you had to make a bridge with was 9

    the bridge reduced distance to G but distance to J didnt change.

    this tells you x>>3 and x<4

    so x=3
    Ah yes, I remember now. AJ was 15.
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    Can someone answer this?
    If I got X and y correct in the last question but got profit to be 600 by 20x + 15y how many would I lose?
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    (Original post by SM-)
    Can someone answer this?
    If I got X and y correct in the last question but got profit to be 600 by 20x + 15y how many would I lose?
    should only be 1
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    (Original post by BanterBus)
    I got £505 too, the last section was 3 marks so we should pick up atleast 1 ft mark.
    I got £505 too i got all the lines correct, there was two intersect i found the first one gave me x=20 and y=10, subbing into p=15x + 20y, gave £500, i know for sure that 20 and 10 are correct as i used the simultaneous eq however i tried the other interect point and found x=27 and y=5 which gave £505 obvs i went with £505 i dont know how ppl got £520 maybe used wront points or line. Fingers crossed
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    (Original post by Zyzz_aesthetic)
    I got £505 too i got all the lines correct, there was two intersect i found the first one gave me x=20 and y=10, subbing into p=15x + 20y, gave £500, i know for sure that 20 and 10 are correct as i used the simultaneous eq however i tried the other interect point and found x=27 and y=5 which gave £505 obvs i went with £505 i dont know how ppl got £520 maybe used wront points or line. Fingers crossed
    Nah it's 520
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    (Original post by yelash)
    For the first part I did 10+12=24 but noticed lucky That would've haunted me forever!!
    Wasn't sure what to do for the last two parts. It said start and finish at any point, so I added 10 to the total time they gave us, and for the last part I added 12 and stated the one that he didn't finish at from the '10'
    which question is this about? pretty sure i did the 10+12 :/
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    (Original post by Hjyu1)
    Nah it's 520
    Tbh at this point i am just hoping i am right but your probably right, i wouldnt have cared much if only AQA didnt **** me with core 3.
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    (Original post by Zyzz_aesthetic)
    Tbh at this point i am just hoping i am right but your probably right, i wouldnt have cared much if only AQA didnt **** me with core 3.
    I did c3 last year such a nice paper what came up in yours
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    (Original post by Hjyu1)
    I did c3 last year such a nice paper what came up in yours
    Yh i agree all the c3 papers from 2015 and before were all standard, same pattern but this year, i kid you not most retarted questions like i had my friends who get As **** up, **** like secx + tanx= 5, show that secx - tanx= -0.2, and it was like 2-3 mark and then you had to find x, then find the angle, so if you coukdnt do the 3 marker you lost the next 5 marks **** like that..
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    (Original post by Zyzz_aesthetic)
    I got £505 too i got all the lines correct, there was two intersect i found the first one gave me x=20 and y=10, subbing into p=15x + 20y, gave £500, i know for sure that 20 and 10 are correct as i used the simultaneous eq however i tried the other interect point and found x=27 and y=5 which gave £505 obvs i went with £505 i dont know how ppl got £520 maybe used wront points or line. Fingers crossed
    I think your critical region is wrong. You went above x=2y and not below.
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    Oh i see well i did djikstra right and got A-G to be 13 in that case. But i misread the question and thought the route it wanted was A-J
    Also got X=3
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    Mistakes I made
    Small error on one of the nearest neighbours
    Read the wrong coordinates for max profit
    Wrong route on djikstra but algorithm was right and I gotX=3
    Feel quite good about my graph theory answers
    Oo and the kruskals question asking for an inequality I put k>10 which is apparently wrong.
    Im going for around 65
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    (Original post by sufiyan1999)
    Mistakes I made
    Small error on one of the nearest neighbours
    Read the wrong coordinates for max profit
    Wrong route on djikstra but algorithm was right and I gotX=3
    Feel quite good about my graph theory answers
    Oo and the kruskals question asking for an inequality I put k>10 which is apparently wrong.
    Im going for around 65
    Why is kruskals wrong there is not other information to say k between any other boundary
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    (Original post by Hjyu1)
    Why is kruskals wrong there is not other information to say k between any other boundary
    Apparently according to people on this its 10 <K<14??
    Not sure. But i got the 10
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    (Original post by -jordan-)
    I think your critical region is wrong. You went above x=2y and not below.
    I thought i did too but i used my graphics cal to plot the region x>2y which is the right inequality i dont think i got that wrong i am not sure where i messed up shm
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    (Original post by Zyzz_aesthetic)
    I thought i did too but i used my graphics cal to plot the region x>2y which is the right inequality i dont think i got that wrong i am not sure where i messed up shm
    I went below, got the right objective line equation and I still got £500 :/
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    (Original post by yelash)
    I went below, got the right objective line equation and I still got £500 :/
    Yh you do go below, so your right there but i got 500 first then got 505, oh well
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    (Original post by harv221)
    which question is this about? pretty sure i did the 10+12 :/
    The Chinese postman question which had several variations/parts but only was like 9 marks total.
    Pretty sure my answer to a) was right but i wasn't really sure for b) or c)
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    (Original post by Zyzz_aesthetic)
    Yh you do go below, so your right there but i got 500 first then got 505, oh well
    Well the variation between £500/£505 can be explained by a sight variation in lines because both my values were values which i rounded down. This was necessary as rounding up from e.g. 10.5 is not right as it would be outside the feasible region.

    However the general consensus seems to be £520 so I'm not very confident. If it's £505 i should get the marks though due to reading errors and vise versa for you, but i don't it will be either
 
 
 
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