Edexcel Gcse Mathematics Linear 1ma0 Quadratic Formula Answers

(Original post by Mr M)
In a sale normal prices are reduced by 20%.

A washing machine has a sale price of £464.

By how much money is the normal price of the washing machine reduced?

Was that the question?! Oh no
I must have misread it.. I thought it was asking for the orginal price.. What would I get if I gave my answer as £580?? I did 464/80 x 100 :/

(Original post by Mr M)
In a sale normal prices are reduced by 20%.

A washing machine has a sale price of £464.

By how much money is the normal price of the washing machine reduced?

For that question i only done 464/0.80 to get 580, forgot to write the difference, how many marks would i get out of 3?

Think I got about 161 marks. Any idea on what grade this is anybody?

Thanks

(Original post by Liyanah)
Sir, what mark do you think you need to get at least a B?

I'm really not sure. I'm afraid you will just have to wait and see.

(Original post by MrMathematician)
Was that the question?! Oh no
I must have misread it.. I thought it was asking for the orginal price.. What would I get if I gave my answer as £580?? I did 464/80 x 100 :/

drop 1 mark

(Original post by Zaid-247)
For that question i only done 464/0.80 to get 580, forgot to write the difference, how many marks would i get out of 3?

2 out of 3

Sir, I got small tray for question 7 but I was just wondering what the working out would be for it?

Could you give more detail for the final question please?
What would the explanation involved?
Thank you sir you're a hero

(Original post by JoeGreen)
Think I got about 161 marks. Any idea on what grade this is anybody?

Thanks

Depends on boundaries but it's definitely an A. Could be an A* but I doubt it because the exam was fairly straight forward.

(Original post by JoeGreen)
Think I got about 161 marks. Any idea on what grade this is anybody?

Thanks

I think it will be an A because June 2013 was 165 for an A* and I thought it was harder than this one so I would expect the grade boundaries to be higher

(Original post by Mr M)
Mr M's Edexcel GCSE Mathematics Linear 1MA0 Higher Tier Paper 2 Answers November 2013

1. Using a calculator

a) 18.75 (2 marks)

b) 20 (1 mark)

2. Katie's sweets

a) 12 (2 marks)

b) 36 (2 marks)

3. Counters

4 (2 marks)

4. Side Elevation

Correct diagram (2 marks)

5. Exchange rates

EITHER HK$325.95 cheaper OR £26.50 cheaper (3 marks)

6. Language school

19 (4 marks)

7. Plants

Small tray (4 marks)

8. Sequences

a) 7n - 4 (2 marks)

b) Yes (it is the 22nd term) (2 marks)

9. Angles in a pattern

115 degrees (4 marks)

10. Music exam

Merit (she got 77.5%) (3 marks)

11. Indices

a) $x^{10}$ (1 mark)

b) $m^{12}$ (1 mark)

c) $\displaystyle \frac{3f^6}{a^4}$ (2 marks)

12. Circle

440 cm (2 marks)

13. Motorway

Lethna is wrong - the journey would take 25 mins 43 seconds at 70 mph (3 marks)

14. Frequency table

a) $20 < T \leq 24$ (1 mark)

b) 18.4 degrees C (4 marks)

c) Correct frequency polygon (2 marks)

15. Pythagoras' Theorem

80.1 cm (3 marks)

16.Equations

a) f = 6.25 (3 marks)

b) h = -0.75 (4 marks)

17. Cubic graph

a) Missing values: -15, 0, -3, 0 (2 marks)

b) Plot graph (2 marks)

18. Isosceles triangle

49.5 (4 marks)

19. Standard form

a) 0.00078 (1 mark)

b) $9.56 \times 10^7$ (1 mark)

20. Reverse percentages

£116 (3 marks)

21. Algebra

a) (1 mark)

b) $\displaystyle m=\frac{g-5}{a+3}$ (3 marks)

22. Trapezium

a) Show quadratic (2 marks)

b) x = 13 (3 marks)

23. Stratified sample

15 (2 marks)

24. Cylinder

14.4 cm (3 marks)

25. Straight lines

They do intersect (3 marks)

26. Cosine Rule

x = 3.73 cm (5 marks)

27. Histogram

12% (3 marks)

28. Circle theorem

Complete proof (3 marks)

Edexcel have asked teachers not to share the link to the paper.

I think i got 110-112/200 :/ I really want at LEAST a B! God, i really want my results!

(Original post by Basic--Dreams)
Sir, I got small tray for question 7 but I was just wondering what the working out would be for it?

small tray - 21.666p per plant

medium tray - 22.375p per plant

large tray - 21.98p per plant

Thank yo, also for question 22 b) (trapezium) i put x^2+x-351 in the quadratic formula to get x=26 cm , i guess i should of halved that to get 13 so how many marks would i get out of 3 for that?

Thank you so much feeling confident now hopefully it will pull off and I won't get dropped sets!!!

(Original post by Super199)
Depends on boundaries but it's definitely an A. Could be an A* but I doubt it because the exam was fairly straight forward.

Thanks, what do you think the minimum for an A will be?

From looking at these results and the non-calc results , I got around 70 for each paper. Do you think this will be good enough for an A or will I be stuck with just another high B :/ cause I have a feeling the grade boundaries may be higher this year. Have the grade boundaries ever been over 140 for an A?

Thanks for the answers Mr M! What was the Pythagoras question?

How did everyone else to question 14? Did they find the midpoints and times them by the frequency, add them up and then divide by the frequency?

Also did you plot the frequency polygon with the midpoints??

I did that too... At least its only one mark.

Does anyone remember the actual question to 12 and 15?