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# Edexcel A2 C4 Mathematics June 2015 - Official Thread watch

1. (Original post by jonnycope7)
If I got 63 on this paper, and 70 on C3, would I have an A* overall
Well my teacher told me you have to get at least 180 UMS in C3 nd C4 combined to get A*.. so it depends on ur UMS more...
2. For the last question integrated between 0 and 2 and got 40pi/ln3 but ran out of time to use the cone formula etc and minus that from the 40pi/ln3. how many marks etc do you reckon???
3. (Original post by cmfunk)
forgot to mention approx 50 in d1
432 UMS; I'm sorry but the A cut is around 480.
4. c1- 82 ums
c2- 88 ums
s1- 74 ums
d1- 90 ums

c3- 48/75 raw
c4- 60/75 raw

is there still a chance for A?
5. (Original post by C++)
The radius was the y coordinate of P. So no, you're method is incorrect. I'm sorry.
how many marks would I lose do you think. Wrong cone volume value and thus wrong final volume
6. (Original post by 1504teal)
I know I realised in the end I couldve used 9. I know I got the wrong answer though. How many marks do you think I'll lose for not getting a correct cone volume and so not the correct answer ?! :/
uft, wow, not sure I'm the right person to ask this but I imagine just one or 2 accuracy marks? That's if you got the right integral and found the area of a cone and subtracted it?
7. (Original post by C++)
432 UMS; I'm sorry but the A cut is around 480.
It's not around 480, it is 480.
8. (Original post by victoria_mae)
c1- 82 ums
c2- 88 ums
s1- 74 ums
d1- 90 ums

c3- 48/75 raw
c4- 60/75 raw

is there still a chance for A?
9. (Original post by 1504teal)
how many marks would I lose do you think. Wrong cone volume value and thus wrong final volume
I suspect around 3 or 4 lost marks.
10. How many marks do you reckon I've lost if
Didn't do the 3 mark shortest distance on the vectors one
Showed all my working but put 4000 for the population and therefore didn't finish
The second volume of revolution part was completely wrong but showed how you would do it with diagram and correctly integrated.
Please help I need to get a B in this to even out to an A overall
11. throw in some #arseyfacts whilst waiting for the ms...here's one

Arsey won the Tour De France...in Scotland #arseyfacts
12. I can feel arsey is close
13. (Original post by matty6mitchell)
It's not around 480, it is 480.
I believe 480 was last year's cut; they fluctuate.
14. Looking at around 67/68 for C4 I think and 69/70 on C3, what are the chances of this being an A*?
15. (Original post by C++)
432 UMS; I'm sorry but the A cut is around 480.
so 100,100,97
aprox 85 c3
30/75 c4 raw marks
50/75 d1 raw
not enough
16. What grade would you say 45 raw mark would be?
17. (Original post by Arsey's Hole)
I can feel arsey is close
I bet you can...
18. (Original post by domcandrews)
What's the bets Arsey's sitting there thinking, why the **** is the answer "Math Error" then after 10 minutes he reads the question again lol.
Exactly the same as what I did xD
19. LOOOL i am such a foking lolka !!!

in 3b, i just did not read the question properly and basically substituted limits for what i have found in part a and got 32ln2 - 12

for question 7c, i was not sure whether to write 0.4.. or 27.1 and wrote both saying that this is what u get if u use radians and this is what u get when u use degrees

for 8c, i found the volume of the whole thing, but ****ed up the second bit

how many marks u reckon i will lose for each one?

cheers guys
20. (Original post by thatNoseyParker)
uft, wow, not sure I'm the right person to ask this but I imagine just one or 2 accuracy marks? That's if you got the right integral and found the area of a cone and subtracted it?
I'll assume 5 to be on the safe side lol sigh thanks anyway!!!

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