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Mr M's Edexcel GCSE Linear Mathematics Higher 1MA0 Paper 2 Answers November 2015 watch

1. How is it 52 coz when u add it up it gives 51cm????
2. (Original post by milen123)
please tell me how people worked out question 7 coz i got 51cm for the perimetre and he had 50cm, theefore he didnt have enough. AM I RIGHT?
I split it to a rectangle and triangle then used pythagoras to find the top.
3. which one would u say was easier?
the June 2015 maths paper edexcel higher tier
or November 2015 paper
4. November any day
(Original post by I Don't Know 79)
which one would u say was easier?
the June 2015 maths paper edexcel higher tier
or November 2015 paper
5. (Original post by I Don't Know 79)
which one would u say was easier?
the June 2015 maths paper edexcel higher tier
or November 2015 paper
I think they were similar and different in many ways. June was more about formulae and November was a lot of arithmetic. I would say that paper 2 was easier in Nov and paper 1 was about the same (Except for Hannah's sweets).

It is harder to set the grade boundaries for November because the spread of data is not as wide. You will find more people at grade D/C/B level and not too many at A*/A grades. Therefore, it is almost impossible to predict the grade boundaries.
6. (Original post by ad4m)
I think they were similar and different in many ways. June was more about formulae and November was a lot of arithmetic. I would say that paper 2 was easier in Nov and paper 1 was about the same (Except for Hannah's sweets).

It is harder to set the grade boundaries for November because the spread of data is not as wide. You will find more people at grade D/C/B level and not too many at A*/A grades. Therefore, it is almost impossible to predict the grade boundaries.
ok
7. When is the next resit after the November one?
8. Yeah I did that too. I did sin which gave me the opposite for the other triangle and you had to work out the adjacent, so i used tan
(Original post by ad4m)
I used tan and then sin i think. You had to find the length of one by using tan and x it by 2 because it met the centre of the circle. Then use sin to find the other length. I got 2. something I can't remember exactly.
9. (Original post by Abraham_b12)
When is the next resit after the November one?
It's in June. The results for November are out on 7th January.
10. How did u work out number 19, 20 and 25?
11. For the ratio question is 5:2 correct? The sector question
12. (Original post by Mr M)
Area of a scalene triangle formula and the cosine rule. I think 11% will be fine.
I did cosine rule and got 34.7 I think I put the numbers incorrectly in the calculator.
13. (Original post by sairajay)
How did u work out number 19, 20 and 25?
Q25: There are 18 fruit sweets.
There are 7 aniseed.
There are 5 mint.

What is the probability of picking 2 different sweets?

Fruit - 18/30 x 12/29 (any other sweet)
Aniseed - 7/30 x 23/29 (any other sweet)
Mint - 5/30 x 25/29 (any other sweet)

Fruit - 216/870
Aniseed - 161/870
Mint - 125/870

216 + 161 + 125 = 502
502 / 870

You can simplify this to 251/435

(4 marks)
14. (Original post by Mr M)
Mr M's Edexcel GCSE Linear Mathe
1. Stem and leaf diagram

2 | 3 5 8 9
3 | 2 5 7 8 9
4 | 1 2 4
5 | 1
6 | 1 3

Key: 2 | 3 = 23 cm (3 marks)

2. Scatter graph

a) Plot point (1 mark)

b) Positive (1 mark)

c) 19 approx. (2 marks)

d) 45 (1 mark)

3. Ages

32, 64, 29 (4 marks)

4. Fuel

49 (3 marks)

5. Singing

2 (4 marks)

6. Area of a rectangle

40000 (2 marks)

7. Fence

No with supporting calculation (he needs 51.2 m) (5 marks)

8. Toothpaste

125 ml (4 marks)

9. Perpendicular bisector

Correct construction (2 marks)

10. Travel graph

a) 54 (2 marks)

b) Complete graph (he gets back after 75 mins) (3 marks)

11. Algebra

a) (they'll probably give full marks to x = 7) (2 marks)

b) (1 mark)

c) (2 marks)

d) (2 marks)

12. Transformation

Rotation 180 degrees about the point (2, 1) (3 marks)

13. Inequalities

a) 5, 6 (2 marks)

b) Graph region (4 marks)

14. Hospital

a) 76 (3 marks)

b) 11.76% (2 marks)

15. Circle and triangles

a) The angle in a semicircle = 90 degrees (1 mark)

b) 2.75 (4 marks)

16. Standard form

a) (1 mark)

b) (2 marks)

17. Parallel lines

(3 marks)

18. Box plots

a) 37 (1 mark)

b) 36 (2 marks)

c) The second distribution has a larger median and a larger interquartile range (2 marks)

19. Upper and lower bounds

a) 4.25 (1 mark)

b) 7.21 (3 marks)

20. Watch faces

36 : 37 (4 marks)

21. Stratified sample

9 (2 marks)

22. Quadratic formula

(3 marks)

23. Graph transformations

a) Translate graph 2 units up (2 marks)

b) Stretch graph by scale factor 2 in the y direction and reflect it in the x axis (2 marks)

24. Triangle

31.1 (5 marks)

25. Probability

(4 marks)

Edit: Corrected error on question 7.
Mr M, what do you predict the grade boundaries will be for an A*?
15. How would u work out numbers 15b,19, 20, 24.

Need help! D:

(Original post by ad4m)
Q25: There are 18 fruit sweets.
There are 7 aniseed.
There are 5 mint.

What is the probability of picking 2 different sweets?

Fruit - 18/30 x 12/29 (any other sweet)
Aniseed - 7/30 x 23/29 (any other sweet)
Mint - 5/30 x 25/29 (any other sweet)

Fruit - 216/870
Aniseed - 161/870
Mint - 125/870

216 + 161 + 125 = 502
502 / 870

You can simplify this to 251/435

(4 marks)
Thank you so much!!!
16. (Original post by Hassanh)
For question 15 did you have to use sohcahtoa? And then make an additional right angle triangle, to give u the full length of the side of the triangle on the circle. My answer was 2-Something, so would i get method marks?
Sounds right.
17. (Original post by milen123)
please tell me how people worked out question 7 coz i got 51cm for the perimetre and he had 50cm, theefore he didnt have enough. AM I RIGHT?
Yes.
18. (Original post by Abraham_b12)
When is the next resit after the November one?
June.
19. (Original post by meetm99)
Mr M, what do you predict the grade boundaries will be for an A*?
I don't guess boundaries.
20. Q20: Watch A was 100% plastic
Watch B was 340° plastic and 20° metal.

Cost is in ratio 3:2 for metal and plastic.

360 x 2 = 720
340 x 2 = 680
20 x 3 = 60
680 + 60 = 740

740 / 20 = 37
720 / 20 = 36

So ratio is 36:37.

It was a pretty easy question, but I like many others fell into the trap of working out the area of the sector/circles. But it was only 4 marks.

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