[rumenaislam]

How many marks do you think you need altogether for an A?

[mohamedksmaar]

can someone please tell me what question 9 was asking

[HarleenS42]

could someone remind me what question 16 and 18 was?

[-TheSpecialOne-]

Wow... 75 in the non calculator, and 87 in the calculator... 162/200... I think that should be an A* :/. Once again, thank you so much Mr M.

[sultan b]

do you lot think 95 out of 200 would be a B

[Hoddy96]

would writing using the random button on the calculator for the question about random sampling be right?!

[ZeqiG]

(Original post by Mr M)
Mr M’s Edexcel GCSE Mathematics A Higher Linear Paper 2 Answers June 2012


1. Parallel lines

133 degrees

Angles on a straight line sum to 180 degrees

Corresponding (or alternate) angles are equal (3 marks)


2. Calculator

a) 43.736 (2 marks)

b) 40 (1 mark)


3. Questionnaire

a) Any two of: overlapping time periods; no option for more than 4 hours; no option for 2-3 hours; doesn’t say time period (2 marks)

b) Improved question with non-overlapping boxes and a time period specified (2 marks)


4. Linear graph

Correct graph drawn (3 marks)


5. Garden

5 boxes - full working needed (5 marks)


6. Potatoes

Farm shop - full working needed (4 marks)


7. Scatter graph

a) Negative (1 mark)

b) 11 km (2 marks)


8. Transformations

a) Correct rotation (right angle at (4, -1)) (2 marks)

b) Correct enlargement (right angle at (7, 2)) (3 marks)


9. Holiday money

51 (3 marks)


10. Inequalities

a) -1, 0, 1, 2, 3 (2 marks)

b) (2 marks)


11. Trial and improvement

4.6 (4 marks)


12. Biased dice

120 (2 marks)


13. Mean from frequency table

28.25 minutes (4 marks)


14. Algebra

a) (2 marks)

b) (3 marks)

c) (1 mark)

d) (2 marks)


15. Water meter

Yes he should get the meter - full working needed (5 marks)


16. Trigonometry

48.2 degrees (3 marks)


17. Compound interest

£6676.72 (3 marks)


18. Pythagoras’ Theorem and trigonometry

16.5 cm (5 marks)


19. Standard form

(3 marks)


20. Changing the subject

(3 marks)


21. Proof

Show expression simplifies to 24n so it is a multiple of 8 (3 marks)


22. Quadratic formula

x = 1.72 or x = -0.387 (3 marks)


23. Sampling

a) (i) Any student has an equal chance of being selected

(ii) Putting names in a hat and drawing them out (or other valid method) (2 marks)

b) 21 (2 marks)


24. Area of triangle

29.3 (5 marks)


25. Biscuits

(4 marks)


26. Vectors

a) b - a (1 mark)

b) 0.75b + 0.25a (3 marks)

For question 19 do you think we had to give the negative value of p as it is p^2 in the question?

Thanks.

[king0617]

(Original post by rumenaislam)
Same, I always seemed to do better on the calculator! I only got around 48-66 for calculator I think

Well if last years mark schemes are anything to go by (and Mr M said they would PROBABLY be similar), if you got the high end of your prediction (60 -66) you might be in with a chance to get an A if you matched the score in your non-calculator paper

[Freyabasey]

Would 84% overall get me an A*?


This was posted from The Student Room's iPhone/iPad App

[Maisie10]

What do you all think the grade boundaries will be out of 200?

[Sensy]

This paper, judging from the mark scheme, is a 98%-100% paper the only one I'm worried about is the random selection question - I wrote:

"The result is randomly selected with him having no influence on the outcome.", or something along the lines of that - would that be acceptable? Apart from that, atleast 190/200 from the two mark schemes.

Thank you very much, Mr M

[ThatSameer]

(Original post by mohamedksmaar)
can someone please tell me what question 9 was asking

There was an exchange rate from pounds to koruna. She wanted to exchange up to £200 but only wanted 100 koruna notes. What's was the most koruna 100 notes she could get.

[king0617]

(Original post by sultan b)
do you lot think 95 out of 200 would be a B

If the mark schemes are similar to last year then yes

[QPRboy]

(Original post by mohamedksmaar)
can someone please tell me what question 9 was asking

It was about the koruna...it said she can take 100 koruna notes. Then it gave the exchange rate from £ to koruna. and then it said she had £200, so how many notes of 100 koruna will she get...I think

[felixdez]

thankyou! i think i got like 94...how many marks would i lose on question 25...i got 111/200 because i did both fractions over 20 as apposed to the first over 20 and second over 19...i showed all the working for my answer, will i get any marks?

[Wall of sound]

While I'm happy everyone is receiving good results, this will only mean the boundaries will be extremely high right...?

[Maisie10]

oh how i wish i was good at maths haha....

[mohamedksmaar]

(Original post by ThatSameer)
There was an exchange rate from pounds to koruna. She wanted to exchange up to £200 but only wanted 100 koruna notes. What's was the most koruna 100 notes she could get.

thank you i remember now i defo got that right and wat about question 2 does anyone remember the exact values

[amara_234]

OK mr.M i need yur help
for question 20/ I wrote 7-2d/-6
But i substitued in values and still gives same answer as your answer do i get all 3 marks

2. for the "suggest how to do random sample" i said number everybody names and use the computer to generate randon names

3. for the standard form question i forgot to square root my answer and left it as 2.4 times10 to the power of 9
do i get 2 marks out of 3 or 1 mark out of 3

and for the vectors question i wrote the wrong values but did the right method the whole way through do i get 1 mark or none for getting no vlaues correct
please reply much appreciated


and is the grade boundary 80% for A*?

[QPRboy]

In the old spec, was there ever a time when the A* boundary was 150, or around that?