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Edexcel GCSE Mathematics A Higher Paper 2016 Unofficial Markscheme

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Why bother with a post grad course - waste of time? 17-10-2016
1. (Original post by SkyeAmber)
Me too
well done
2. (Original post by Omz123)
Sh¡t I got 7 zeros at the end of my answer not 8
are u gonna cry?
3. (Original post by tig16v)
oh sorry man, that was my last grain!
go 2 the soup kitchen im sure theyll fed u
4. (Original post by Redcoats)
So did I. I'm pretty sure that's correct.
I got only 3 minus root 6????
5. OMG exam was hard! Can someone tell me how many marks the questions were. I want to calculate how i did. I'm predicted an A but I feel like I got a B

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6. (Original post by 34908seikj)
The grade boundaries will be pretty high, it was quite an easy exam imo
Agree. Reckon the grade boundaries will be 99 for an A*, 98 for an A, 97 for a B, 96 for a C ahaha
7. (Original post by DhillonDodhia)
hahahahha unlucky mate
just kids
8. (Original post by LogicalFallacy)
Hey, if anybody is willing to contribute the answers, and preferably the questions, then I shall set up a mark scheme for you all. Thanks in advance!

Can people please attach question numbers to their answers? Method would be appreciated.
Spoiler:
Show
Question 1. What is the volume of the prism?
Area of face = 30cm² Length of prism = 25cm.

30cm² x 25cm = 750cm³

Question 6(?). How many teachers are there altogether?
2/5 of teachers are male. 36 are male.

2/5 of total = 36
2 x 18 = 36
18 x 2 = 90.

Question (?). X² = 4(X-3)²

X² = 4[(X - 3)(X - 3)]
X² = 4[X² - 3X - 3X+ 9]
X² = 4[X² - 6X + 9]
X² = 4X² - 24X + 36

0 = 4X² - X² - 24X + 36
0 = 3X² - 24X + 36

0 = 3[X² - 8x + 12]
0 = 3[(X - 6)(X - 2)]

X = 6 or X = 2
Q?? - Estimate 892/18.9 (or something idk) (2 marks - maybe)
Round to 1sf
900/20 = 45

Q?? - Angle = 69 (4 marks [I think])

180-48-48 = 84 (angles in a triangle sum to 180 & base angles in an isosceles are equal)
84/2 = 42 (angle at the centre is twice the angle at the circumference)
(180-42)/2 = 69 (angles in a triangle sum to 180 & base angles in an isosceles are equal)
Therefore angle = 69 (alternate segment theorem)

Q?? - Angie does not have enough varnish (5 marks)

Total area = (4x10) + (2x2.5x2) = 50 metres squared
Litres required = 50/5 = 10 litres
Angie has = 3 x 2.5 = 7.5 litres
10 litres > 7.5 litres

Q?? - find shaded area of triangles in square= 25(4 - π) (5 marks)

Square = 10x10 = 100 cm squared
Circle = π x 5 squared = 25π
Shaded = 100 - 25π = 25 (4 - π)

Q25 - find the shaded area = 3 - root6/12 (3 marks)

(root2/2 x root2/2)x 1/2 = 1/2 x 1/2 = 1/4 cm squared
(root3/3 x root2/2) x 1/2/ = root6/6 x 1/2 = root6/12 cm squared
1/4 - root6/12 = 3/12 - root6/12 = 3 - root6/12

That's all I can remember for now
9. would 85% be enough for an A*??
10. What was the answer to the circle theorems question?
11. (Original post by katodizzle)
What was the answer to the circle theorems question?
69
12. Area question attached below

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13. (Original post by 11tan)
Q?? - Estimate 892/18.9 (or something idk) (2 marks - maybe)
Round to 1sf
900/20 = 45

Q?? - Angle = 69 (4 marks [I think])

180-48-48 = 84 (angles in a triangle sum to 180 & base angles in an isosceles are equal)
84/2 = 42 (angle at the centre is twice the angle at the circumference)
(180-42)/2 = 69 (angles in a triangle sum to 180 & base angles in an isosceles are equal)
Therefore angle = 69 (alternate segment theorem)

Q?? - Angie does not have enough varnish (5 marks)

Total area = (4x10) + (2x2.5x2) = 50 metres squared
Litres required = 50/5 = 10 litres
Angie has = 3 x 2.5 = 7.5 litres
10 litres > 7.5 litres

Q?? - find shaded area of triangles in square= 25(4 - π) (5 marks)

Square = 10x10 = 100 cm squared
Circle = π x 5 squared = 25π
Shaded = 100 - 25π = 25 (4 - π)

Q25 - find the shaded area = 3 - root6/12 (3 marks)

(root2/2 x root2/2)x 1/2 = 1/2 x 1/2 = 1/4 cm squared
(root3/3 x root2/2) x 1/2/ = root6/6 x 1/2 = root6/12 cm squared
1/4 - root6/12 = 3/12 - root6/12 = 3 - root6/12

That's all I can remember for now
Yeah I got all the same answers. Does anyone remember what they got for using the graph to estimate the x^2+4x-2=0 etc.
14. (Original post by DhillonDodhia)
are u gonna cry?
Probably...it is my GCSE math exam...
Also stop commenting anything that's not math related u scrub
15. someone talk about the vectors question
16. (Original post by MrsGren)
would 85% be enough for an A*??
yes
17. (Original post by MrsGren)
would 85% be enough for an A*??

No, 'twas an easy paper, probably around 92%
18. How is question 11, 36%. Please can you show the working out.
19. (Original post by MrsGren)
would 85% be enough for an A*??
Normally yeah
20. (Original post by Omz123)
Sh¡t I got 7 zeros at the end of my answer not 8
(3.5x10^6)/(5x10^-3)
3.5 / 5 = 0.7
indices rule 6--3 =9
0.7x10^9
put in standard form
7x10^8

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