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

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1. (Original post by Hennajj)
I got 9.25 ffs, I've failed the whole paper guys. Prepare for my funeral
it is 9.25
2. For question 14, how did you get 3 bars?
My answer was something like 2.91 (rough guess of what I put) bars but because they're solid objects and the fact that you can't get 0.91 of a bar (I can't word my reasoning right at all, sorry if it makes no sense), I rounded it DOWN right to 2.
At least I'll get the marks for working out.
3. (Original post by Hasib_332)
I think the answer is £42.28.
It was definitely £42.28
4. can you add the marks?
5. Anyone got the answer to collin
6. What was question 10?
7. (Original post by Hennajj)
So was mine! Did we do it right or is the zig zag thingy wrong?
its meant to be a zig zag, well i followed my heart and done a zig zag
Anyone got the answer to collin
i got 20 something
9. (Original post by Benb2000)
I got 80.4 but don think it's right
Dw It is
10. (Original post by s_ovo)
yeah, mine was like a ZIG ZAG when i saw draw a curve on this mark scheme i freaked out
Use this website;

https://www.desmos.com/calculator

Type the equation X^3-3X+1
11. (Original post by muchunknown)
Expansion of (3-X)(-3x-4)=3x^2+5x-12 which is what the bottom was - how am I wrong?
Expanding those brackets out precisely gives u : -9x-12+3x^2+4x which cancels out to what u got except for it ending up resulting in a negative 5x as it would cancel out to get 3x^2-5x-12
12. on the question about the mean height of a tree would you get away with 8 if you rounded up?
13. (Original post by hvmze)
i got 20 something
I believe I did as well
14. Can u put the amount of marks for each question ?
15. I got that!! Honestly I was reaching so bad I don't even know where the 9 came from
16. (Original post by 34908seikj)
Wasn't the last question like 1/2 * 7 * 8 Sin(X) = 18

56Sin(x) = 36

Sin^-1(36/56) = X

x = 40

???

I think I did it wrong then.
You worked out angle ABC rather than angle BAC (which they asked for)
17. (Original post by muchunknown)
Expansion of (3-X)(-3x-4)=3x^2+5x-12 which is what the bottom was - how am I wrong?
18. (Original post by Mahrez)
Q15 I dont agree
Some one help me please!!! I expanded (x+1)(x-1) to get x^2-1 would this still be right for Q25??

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19. what was the quadratic formula question
20. (Original post by Purpleunicorn197)
Reps are not necessary but would be appreciated

It would be really useful if you could remember the question numbers
1. Order numbers correctly and include a key
b) 0.45
2a. 30abc
b. 3(y+2)
c. x^2-3x
3. x=9.25
4. Smallest packet was best value for money because it was cheapest per bag of crisps
5. Green- 0.09 Red- 0.36
6a. 20.3
b. 68.04kg
c. 2.61m
7. 3.8
8a. 4:3
b. 480 pixels
9.x= 124 degrees
10. 7.92
11.£42.29
12. x=144 degrees
13.
-2 -1 0 1 2
-1 3 1 -1 3
Draw curve
14. 3 Bars
15. No, because 7766.22 was greater than 7500 pounds
16. 128g
b.11g
17. 30.1
18. 10a^5b^4
b. y= 5p^2-x
19.11 males
20. x= 0.29 or x= -2.29
21. 29.25
22. F.d- 1.6, 3.2, 2.4, 1.8, 0.3
23. -1/3x+4
24. 2x/(x+1)(x-1)
25. 80.4
Here's all the topics and marks:
Q1 - (5) Stem & leaf diagrams, Probability
Q2 - (3) Algebra
Q3 - (3) Perimeter / value of x
Q4 - (4) Which size was best value
Q5 - (3) Probability - red/green counters
Q6 - (7) BMI, Percentage increase
Q7 - (4) Trial & improvement
Q8 - (4) Ratio
Q9 - (4) Parallel line theorems
Q10 - (4) Mean
Q11 - (5) Conversion, gallons & litres
Q12 - (4) Pentagon
Q13 - (4) Cubic graph
Q14 - (5) Density, bars
Q15 - (4) Compound interest, percentage decrease
Q16 - (3) Cumulative frequency
Q17 - (4) Pythagoras + Trig, two triangles
Q18 - (5) Rearranging formulas
Q19 - (2) Stratified sampling
Q21 - (3) Bounds
Q22 - (3) Arc length, perimeter
Q23 - (3) Histograms
Q24 - (5) Algebraic fractions
Q25 - (6) Trigonometry, Sine/cosine rules & area of triangle

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