If you're looking for foundation then go here: https://www.thestudentroom.co.uk/sho...6#post71772886
1. (a) (10,19) (1 mark)
(b) Positive correlation (1 mark)
(c) Estimated number of hours sunshine 12.8 (2 marks)
(d) Yes the weatherman is correct because as the hours of sunlight increases the temperature increases (1 mark)
2. 56 as prime factors = (2 marks)
3. (3 marks)
4. prove that
 diagram:
Spoiler:Show
(3 marks)
5. 70.5kg of metal
solution 
Spoiler:Show
(5 marks)
6. Show that and are parallel
solution 
Spoiler:Show
(2 marks)
7. boys mean mark = 72 (3 marks)
8. (a) write as a normal number: 0.00000797 (1 mark)
(b) work out (2 marks)
9. take off tax: £500 (2 marks)
10. expand (3 marks)
11. (a) Turning point of graph = (1, 3) (1 mark)
(b) estimates for roots: 0.7 and 2.75 (1 mark)
(c) estimate for (1 mark)
12. (a) (2 marks)
(b) (2 marks)
13. (a) find equation for (2 marks)
(b) find positive value of when (2 marks)
14. Find fraction of shapes that are circles: (4 marks)
15. (a) estimate height of cone: 4cm (3 marks)
(b) h is a overestimate (1 mark)
16. Prove that is even
solution 
Spoiler:Show
(4 marks)
17. probability of picking two different coloured counters = or equivalent (4 marks)
18. find equation of line in rhombus: (4 marks)
19. vectors question:
(4 marks)
20. and (5 marks)
21. prove that diagonals are equal: use congruent triangles (4 marks)
Diagram for question 21:
Spoiler:Show
22. prove that
Diagram for question 22:
Spoiler:Show
(5 marks)
Please help me complete the mark scheme and let me know if there are any mistakes.
You are Here:
Home
> Forums
>< Study Help
>< Maths, science and technology academic help
>< Maths
>< Maths Exams

Edexcel 91 GCSE Maths (Higher)  2017 Paper 1  UNOFFICIAL MARK SCHEME watch

hebeb
 Follow
 39 followers
 7 badges
 Send a private message to hebeb
 Thread Starter
Offline7ReputationRep: Follow
 1
 25052017 12:41
Last edited by hebeb; 30052017 at 01:01. 
 Follow
 2
 25052017 13:13
Does anyone have a copy of the paper they can send me please?

clumsyorange
 Follow
 19 followers
 13 badges
 Send a private message to clumsyorange
Offline13ReputationRep: Follow
 3
 25052017 13:13
Haha I'm ****ed

 Follow
 4
 25052017 13:19
Express 56 as it's prime factors, can't remember what question number it was but the answer is 2^3 x 7
Last edited by ZainahS; 25052017 at 13:23. 
 Follow
 5
 25052017 13:22
Omg I think I actually did really well.

 Follow
 6
 25052017 13:25
(Original post by hebeb)
1. (i) (11,19)
(ii) positive correlation
(iii) yes the weatherman is correct because as the hours of sunlight increases the temperature increases
2. turning point = (1, 3)
approximate roots = 0.7, 2.75
f(1.5) = 2.4
3. prove that x^2+6x=1
4. 70.5kg of metal
5. write down the value of 81^(1/2): 1/9
work out (64/125)^(2/3): 16/25
6. expand (x+1)(x+2)(x+3): x^3+6x^2+11x+6
7. (i) write 7.63x10^6 in standard form: 0.00000763
work out 2.62x10^5/4x10^3: 6.3x10^8
8. take off tax: £500.
9. (i) y=9/x^2
(ii) work out positive value of x when y=16: x=3/4
10. fraction of circles = 1/3
11. (i) h=4
(ii) estimate is greater than true value
12. prove that n^22(n2)^2 is even
13. prove that lines are parallel: have same gradient
14. probability of picking two different coloured counters = 7/18 or equivalent
15. find equation of line in rhombus: y=2x+21
16. find average mark of boys in class: 72
17.
18.
19. vectors question: k = 2/5
20. x=24/5, y = 7/5 and x = 3, y = 4
21. prove that diagonals are equal: use congruent triangles
Diagram for question 21:
22. prove that cos PBQ = 1((2root3)/200)x^2
Express 56 as a product of its prime factors: 2^3*7 (don't know which question this was)
Please help me complete the mark scheme and let me know if there are any mistakes. 
reemer9997
 Follow
 0 followers
 4 badges
 Send a private message to reemer9997
Offline4ReputationRep: Follow
 7
 25052017 13:30
(Original post by hebeb)
1. (i) (11,19)
(ii) positive correlation
(iii) yes the weatherman is correct because as the hours of sunlight increases the temperature increases
2. turning point = (1, 3)
approximate roots = 0.7, 2.75
f(1.5) = 2.4
3. prove that x^2+6x=1
4. 70.5kg of metal
5. write down the value of 81^(1/2): 1/9
work out (64/125)^(2/3): 16/25
6. expand (x+1)(x+2)(x+3): x^3+6x^2+11x+6
7. (i) write 7.63x10^6 in standard form: 0.00000763
work out 2.62x10^5/4x10^3: 6.3x10^8
8. take off tax: £500.
9. (i) y=9/x^2
(ii) work out positive value of x when y=16: x=3/4
10. fraction of circles = 1/3
11. (i) h=4
(ii) estimate is greater than true value
12. prove that n^22(n2)^2 is even
13. prove that lines are parallel: have same gradient
14. probability of picking two different coloured counters = 7/18 or equivalent
15. find equation of line in rhombus: y=2x+21
16. find average mark of boys in class: 72
17.
18.
19. vectors question: k = 2/5
20. x=24/5, y = 7/5 and x = 3, y = 4
21. prove that diagonals are equal: use congruent triangles
Diagram for question 21:
22. prove that cos PBQ = 1((2root3)/200)x^2
Express 56 as a product of its prime factors: 2^3*7 (don't know which question this was)
Please help me complete the mark scheme and let me know if there are any mistakes. 
urgurlbecca
 Follow
 12 followers
 14 badges
 Send a private message to urgurlbecca
Offline14ReputationRep: Follow
 8
 25052017 13:30
does anyone know how many marks question 15 was worth overall? completely stuffed that one  i got 100/125 or something like that and wrote that my answer was an underestimate
Last edited by urgurlbecca; 30052017 at 12:11. 
whowannadate
 Follow
 0 followers
 11 badges
 Send a private message to whowannadate
Offline11ReputationRep: Follow
 9
 25052017 13:30
What was the fraction of circles question, i forgot or missed it :/

 Follow
 10
 25052017 13:31
For Q14 I got 1/2
2/9 x 7/8 = 14/56
7/9 x 2/8 = 14/56
Together = 28/56 = 1/2
edit: ignore thisLast edited by Malph; 25052017 at 13:39. 
 Follow
 11
 25052017 13:33
(Original post by hebeb)
1. (i) (11,19)
(ii) positive correlation
(iii) yes the weatherman is correct because as the hours of sunlight increases the temperature increases
2. turning point = (1, 3)
approximate roots = 0.7, 2.75
f(1.5) = 2.4
3. prove that x^2+6x=1
4. 70.5kg of metal
5. write down the value of 81^(1/2): 1/9
work out (64/125)^(2/3): 16/25
6. expand (x+1)(x+2)(x+3): x^3+6x^2+11x+6
7. (i) write 7.63x10^6 in standard form: 0.00000763
work out 2.62x10^5/4x10^3: 6.3x10^8
8. take off tax: £500.
9. (i) y=9/x^2
(ii) work out positive value of x when y=16: x=3/4
10. fraction of circles = 1/3
11. (i) h=4
(ii) estimate is greater than true value
12. prove that n^22(n2)^2 is even
13. prove that lines are parallel: have same gradient
14. probability of picking two different coloured counters = 7/18 or equivalent
15. find equation of line in rhombus: y=2x+21
16. find average mark of boys in class: 72
17.
18.
19. vectors question: k = 2/5
20. x=24/5, y = 7/5 and x = 3, y = 4
21. prove that diagonals are equal: use congruent triangles
Diagram for question 21:
22. prove that cos PBQ = 1((2root3)/200)x^2
Express 56 as a product of its prime factors: 2^3*7 (don't know which question this was)
Please help me complete the mark scheme and let me know if there are any mistakes. 
hebeb
 Follow
 39 followers
 7 badges
 Send a private message to hebeb
 Thread Starter
Offline7ReputationRep: Follow
 12
 25052017 13:33
(Original post by reemer9997)
For question 2, the scale on the Y axis was different to the one on the X axis. Thus, f(1.5) was 2.8. There were only 5 squares in 1 difference in y. 
 Follow
 13
 25052017 13:34
there was a multiplication question in the paper right?

 Follow
 14
 25052017 13:37
(Original post by Malph)
For Q14 I got 1/2
2/9 x 7/8 = 14/56
7/9 x 2/8 = 14/56
Together = 28/56 = 1/2 
joseph63211
 Follow
 2 followers
 4 badges
 Send a private message to joseph63211
Offline4ReputationRep: Follow
 15
 25052017 13:38
Does anyone know how much each question was worth (for marks), so we can predict what scores we have got?

 Follow
 16
 25052017 13:38
(Original post by Ahmed257)
there was a multiplication question in the paper right? 
 Follow
 17
 25052017 13:38
(Original post by ZainahS)
9*8 isn't 56, it's 72 
 Follow
 18
 25052017 13:39
(Original post by hebeb)
1. (i) (11,19)
(ii) positive correlation
(iii) yes the weatherman is correct because as the hours of sunlight increases the temperature increases
2. turning point = (1, 3)
approximate roots = 0.7, 2.75
f(1.5) = 2.8
3. prove that x^2+6x=1
4. 70.5kg of metal
5. write down the value of 81^(1/2): 1/9
work out (64/125)^(2/3): 16/25
6. expand (x+1)(x+2)(x+3): x^3+6x^2+11x+6
7. (i) write 7.63x10^6 in standard form: 0.00000763
work out 2.62x10^5/4x10^3: 6.3x10^8
8. take off tax: £500.
9. (i) y=9/x^2
(ii) work out positive value of x when y=16: x=3/4
10. fraction of circles = 1/3
11. (i) h=4
(ii) estimate is greater than true value
12. prove that n^22(n2)^2 is even
13. prove that lines are parallel: have same gradient
14. probability of picking two different coloured counters = 7/18 or equivalent
15. find equation of line in rhombus: y=2x+21
16. find average mark of boys in class: 72
17.
18.
19. vectors question: k = 2/5
20. x=24/5, y = 7/5 and x = 3, y = 4
21. prove that diagonals are equal: use congruent triangles
Diagram for question 21:
22. prove that cos PBQ = 1((2root3)/200)x^2
Express 56 as a product of its prime factors: 2^3*7 (don't know which question this was)
Please help me complete the mark scheme and let me know if there are any mistakes. 
 Follow
 19
 25052017 13:39
I think I got around 72 in the paper
What grade would that be 
whowannadate
 Follow
 0 followers
 11 badges
 Send a private message to whowannadate
Offline11ReputationRep: Follow
 20
 25052017 13:41
Anyone know the fraction of circles question ppl on about
Related discussions
 Edexcel 91 GCSE Maths (Higher)  2017 Paper 3 ...
 2017 Edexcel GCSE Maths 91 Paper 3 (Higher) Unofficial ...
 Edexcel 91 GCSE Maths (Foundation)  2017 Paper 1 ...
 Edexcel 91 GCSE Maths (Higher)  2017 Paper 2 [Official ...
 2017 Unofficial Markscheme List  GCSE and ALevel
 GCSE EDEXCEL MATHS Paper 1 Higher Tier 24th May 2018 ...
 Edexel GCSE Maths Paper 2 (higher) unofficial mark scheme ...
 gcse maths edexcel 91 paper 2 higher 2017: Let's Predict ...
 Edexcel 91 GCSE Maths (Higher)  2017 Paper 1 [Official ...
 FOUNDATION Paper 2 Edexcel Maths GCSE 2017 (91)
Related university courses

Mathematics and Physics
University of Warwick

Mathematics
University of Manchester

Mathematics and Philosophy
University of Birmingham

Mathematics
University of Strathclyde

Education and Mathematics
Keele University

Applied Mathematics
University of Aberdeen

Mathematics Operational Research and Statistics with a Year Abroad
Cardiff University

Mathematics
University of Oxford

Mathematics (PGDE  Graduates only)
University of Strathclyde

Mathematics with Foundation Year
Swansea University
We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.
 Notnek
 charco
 Mr M
 Changing Skies
 F1's Finest
 RDKGames
 davros
 Gingerbread101
 Kvothe the Arcane
 TeeEff
 The Empire Odyssey
 Protostar
 TheConfusedMedic
 nisha.sri
 claireestelle
 Doonesbury
 furryface12
 Amefish
 Lemur14
 brainzistheword
 Sonechka
 TheAnxiousSloth
 EstelOfTheEyrie
 CoffeeAndPolitics
 Labrador99
 EmilySarah00
 thekidwhogames
 entertainmyfaith
 Eimmanuel
 Toastiekid
 CinnamonSmol
 Qer