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# UNOFFICIAL MARKSCHEME Edexcel Maths Calculator paper 09/06/2016 watch

1. (Original post by 34908seikj)
No, it was a lot easier.
Okarin ignored Mayushii's tuturuuu
2. (Original post by robishere)
The Trial and Improvement answer I got was 3.7 and here is how:

3.8^3 - 5 x 3.8 = 35.872
3.7^3 - 5 x 3.7 = 32.153

35.872 - 34 = 1.872
34 - 32.153 = 1.847

1.847 < 1.872

Therefore 3.7 is the correct answer!?

Another point is that I got 80.1 instead of 80.4 in the last question however I believe this is because I rounded the result of the first stage to 40. Hopefully I will still get 4 or 5 out of 6 for doing the correct working.
I'm one of the few people in agreement with this 3.7 method, and yes, you should get 4/5 marks for the working
3. (Original post by Benb2000)
I got 80.4 but don think it's right
Knowing 1/2absinC= 18cm (squared)...
1/2 x 7 x 8 x sinC= 18
18/28= sinC
sin-1(18/28)= 40.00520088

Now use the cosine rule:

72+82-(2 x 7 x 8 x cos(40.00520088)) =27.20955764

Then square rooting it gives…
5.216278141

Then use the sine rule…

(Sin(40.00520088) / 5.216278141) x 8 = 0.9859246389

Sin-1(0.9859246389)= 80.4 (to 3 sig. Figures)

If anyone believes this method to be incorrect reply to this.
4. (Original post by vj r)
That is wrong because if you use 3.75 the answer is too low and because you need to round final answer to 1d.p it has to be 3.8
However, this shows 3.8 being 0.025 further away than 3.7. 3.7 is closer.Therefore, the answer is 3.7, even though 3.75 gives an answer smaller than 34.
5. No.It was 3.8!

QUOTE=Jay420KushBlazin;65593553]Trial and improvement was 4.20[/QUOTE]
6. (Original post by Edgerulezs)
Okarin ignored Mayushii's tuturuuu
Tuturu~

https://www.tuturu.me
7. (Original post by 34908seikj)
Average grade boundary is 166, not taking into account June 2015
it is almost entirely pointless taking November grade boundaries into account, most schools submit their most able students for early entry maths therefore the A/A* boundaries are almost always exceptionally high. If you just consider the June boundaries, the average is 161.
8. (Original post by DrPepper123)
Knowing 1/2absinC= 18cm (squared)...
1/2 x 7 x 8 x sinC= 18
18/28= sinC
sin-1(18/28)= 40.00520088

Now use the cosine rule:

72+82-(2 x 7 x 8 x cos(40.00520088)) =27.20955764

Then square rooting it gives…
5.216278141

Then use the sine rule…

(Sin(40.00520088) / 5.216278141) x 8 = 0.9859246389

Sin-1(0.9859246389)= 80.4 (to 3 sig. Figures)

If anyone believes this method to be incorrect reply to this.
Agreed
9. (Original post by jtb135)
I'm one of the few people in agreement with this 3.7 method, and yes, you should get 4/5 marks for the working
3.7 or 3.8, you're in the ballpark. A worst case scenario is that you lose 1 mark. Don't fret! I am sure you all did fine!
10. Both markschemes can now be found here. Thanks for sharing your answers!
11. And thus a debate between 3.7 and 3.8 began. Take your sides!

"Winter is Coming"- Pretty much everyone in Game of Thrones
12. (Original post by DrPepper123)
And thus a debate between 3.7 and 3.8 began. Take your sides!

"Winter is Coming"- Pretty much everyone in Game of Thrones
😱😱😱 Okarin... Your fav drink... But mayushii doesn't have money to buy it
13. (Original post by DrPepper123)
And thus a debate between 3.7 and 3.8 began. Take your sides!

"Winter is Coming"- Pretty much everyone in Game of Thrones
Were you here for the debate earlier?
14. cam someone tell whats question 16 is, trying to remember if i got it.
15. pretty sure i got 98 but can someone remind what question 9 was asking xx
16. (Original post by bigbxtti)
cam someone tell whats question 16 is, trying to remember if i got it.
17. (Original post by ahmbiology)
pretty sure i got 98 but can someone remind what question 9 was asking xx
https://youtu.be/ahe6jmuT2DM?t=29s
18. (Original post by jtb135)
Were you here for the debate earlier?
Nope, but I am sure as more and more people respond to the thread the more discrepancies will arise.
19. I did aswell, we both did sin-1 instead of cos-1
20. (Original post by erodedsoul)
it is almost entirely pointless taking November grade boundaries into account, most schools submit their most able students for early entry maths therefore the A/A* boundaries are almost always exceptionally high. If you just consider the June boundaries, the average is 161.
I don't know about that, my whole year was put in to do it in November.

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