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Mr M's Edexcel GCSE Linear 1MA0 Higher Tier Paper 2 Answers June 2013

Mr M's Edexcel GCSE Linear 1MA0 Higher Tier Paper 2 Answers June 2013


1. Surface area

40.5 (3 marks)


2. Mince pies

Elaine doesn’t have enough mincemeat (4 marks)


3. Scatter graph

a) Plot points (1 mark)

b) As the age increases, the value of the car decreases OR negative correlation (1 mark)

c) £6200 (or an answer near this) (2 marks)


4. Probability game

126 (3 marks)


5. Questionnaire

a) Any two of overlapping boxes, no time period, no box for more than 12 (2 marks)

b) Question with time period , no overlapping boxes and a full range of choices (2 marks)

c) His friends are all of a similar age and will not give him a representative sample of the population (1 mark)


6. Yoghurt machine

4.8 seconds (4 marks)


7. Sharing money

725\frac{7}{25} (4 marks)


8. Playground tarmac

£10752 (4 marks)


9. Angles

Angle RQD is 35 degrees (corresponding angles are equal)

Angle x is 55 degrees (angles on a straight line add up to 180 degrees) (4 marks)


10. Trial and improvement

4.7 (4 marks)


11. Pythagoras’ Theorem

3.52 (3 marks)


12. Solving equations

a) x = 6.5 (3 marks)

b) y = -3 (2 marks)


13. Midpoint and gradient

a) (3, 3.5) (2 marks)

b) -1.8 (2 marks)


14. Banks

Viv should invest with Friendly Bank as she will earn an extra £9.70 (4 marks)


15. Quadratic graph

a) Missing values: 8, -1, 0, 8 (2 marks)

b) Graph of parabola (2 marks)

c) x = -1 or x = 3 (2 marks)


16. Angles in a circle

Angle OTP = 90 degrees (radius and tangent are perpendicular)

Angle OTS = angle OST (isosceles triangle)

x = 29 degrees (angles in a triangle add up to 180 degrees) (5 marks)


17. Box plots

a) Correct box plot (2 marks)

b) The boys’ median is greater than the girls’ median (£32 compared to £25)

The boys’ interquartile range is smaller than the girls’ interquartile range (£22 compared to £26) (2 marks)


18. Changing the subject of a formula

p=±y+43p=\pm \sqrt{\frac{y+4}{3}} (don’t worry if you didn’t include the plus or minus sign) (3 marks)


19. Factorising

a) 3(2+3x)3(2+3x) (1 mark)

b) (y+4)(y4)(y+4)(y-4) (1 mark)

c) (2p5)(p+2)(2p-5)(p+2) (2 marks)


20. Ladder

The angle is 68 degrees so it needs to be a bit larger before the ladder is safe (3 marks)


21. Stratified sample

49 (2 marks)


22. Inverse proportion

8564\frac{85}{64} (3 marks)


23. Upper and lower bounds

3.186915888 and 3.110091743 (rounded answers are acceptable so long as they show several decimal places) (4 marks)


24. Scalene triangle

a) 18.2 (2 marks)

b) 6.56 (3 marks)


25. Simultaneous equations

x = 2.87 and y = -0.87

x = -0.87 and y = 2.87 (6 marks)
(edited 10 years ago)

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Reply 1
Hope everyone gets what they expected, and the last question simultaneous equation + quadratic equation in one was a-level maths!
Reply 2
Reply 3
Original post by Wajaad
Hope everyone gets what they expected, and the last question simultaneous equation + quadratic equation in one was a-level maths!


It really wasn't. Substitution is part of the gcse syllabus. I think answers were when x=2.87, y=-0.87, and when x=-0.87, y=2.87


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Reply 4
Original post by Wajaad
Hope everyone gets what they expected, and the last question simultaneous equation + quadratic equation in one was a-level maths!


What?
Reply 5
Original post by ahmed15
It really wasn't. Substitution is part of the gcse syllabus. I think answers were when x=2.87, y=-0.87, and when x=-0.87, y=2.87


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That should be correct I think!! Seemed to be what people got


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Reply 6
Good Luck Everyone , I hope I get the A*
Reply 7
I probably made so many stupid mistakes, even though after non-calculator I thought "alright Dylan, no more stupid mistakes"

edit: Yeah, I made many mistakes.
(edited 10 years ago)
Reply 8
Roughly how much out of 200 is a c grade? Any estimate will do :biggrin: not the brightest mathematician ever I'm afraid :/
Reply 9
around 75
Reply 10
Roughly how much out of 200 is an A*. Judging by the fact that this paper was very easy though.
Predictions for an A*?
Reply 12
Original post by danfox12
Roughly how much out of 200 is a c grade? Any estimate will do :biggrin: not the brightest mathematician ever I'm afraid :/


60/200 (on a higher paper)
Reply 13
Original post by danfox12
Roughly how much out of 200 is a c grade? Any estimate will do :biggrin: not the brightest mathematician ever I'm afraid :/


I think for this year 130 will be A and 100 will be a B so over 65 should be a C to be honest taking into consideration the difficulty of some questions
165 for an A*
Original post by ahmed15
It really wasn't. Substitution is part of the gcse syllabus. I think answers were when x=2.87, y=-0.87, and when x=-0.87, y=2.87


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I got that too! :smile:
Reply 16
right then, feeling confident ATM. Good luck everyone :smile:
Does anyone have a link to the actual paper with answers instead of just answers. Thanks :smile:
Reply 18
could anyone please answer this?
if i put 2.87 and -0.87 and vice versa (the correct answer) but with no working out (i used trial and error), is that full marks regardless?

cheers, and top work Mr M
Reply 19
How much out of 200 for an A/A*?

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