Mr M's OCR FSMQ Additional Maths June 2014 Answers

Anyone got the actual questions?

9i was worth one mark
9ii was worth 4

Mr M's OCR FSMQ Additional Maths June 2014 Answers


1. $-2.5 < x < 4$ (3 marks)


2. $y=x^3-2x^2+7x-4$ (4 marks)


3. (i) 32 (3 marks)

(ii) 42 (1 mark)


4. (i) $v=0.18t-0.0003t^2$

600 seconds (4 marks)

(i) 10.8 km (2 marks)


5. (i) Angle BAL = 45 degrees and angle ALB = 20 degrees (? marks)

(ii) 14.5 nautical miles (? marks)


6. (i) a = 1 and b = 6 (4 marks)

(ii) x =2, x = 3 and x = -1 (3 marks)


7. (i) $2\sqrt5$ (2 marks)

(ii) $(x-4)^2+(y-9)^2=5$ (3 marks)


8.(i) Prove parallelogram (2 marks)

(ii) Prove rhombus (2 marks)

(iii) Prove not a square (2 marks)


9. (i) Show (1 marks)

(ii) x = 108 degrees and x = 45 degrees (4 marks)


10. (i) (1, -2) (? marks)

(ii) $5y+x+9=0$ (? marks)


11. (i) $V=x(30-2x)(14-2x)$ and show (4 marks)

(ii) $x=3$ and $x=\frac{35}{3}$ (5 marks)

(iii) $x=\frac{35}{3}$ should be rejected as it gives the minimum point.

Maximum volume = 576 cubic cm (3 marks)


12. (i) $\frac{15}{x}+\frac{15}{x-2}$ (2 marks)

(ii) Show (4 marks)

(iii) 6.19 km/hr (3 marks)

(iv) 1 hour 9 minutes (3 marks)


13. (i) $5x+6y \leq 60$ and $4x+3y \leq 36$ (3 marks)

(ii) Plot inequalities (4 marks)

(iii) $V=3.5X+3Y$ and 33 cubic metres (5 marks)


14. (i) The probability of success at each trial is constant and the trials must be independent (2 marks)

(ii) 0.0861 (6 marks)

(iii) 0.787 (4 marks)


Edit: Corrected mistake on 13(iii) and added the answer to the missing question. I'll fill in the missing marks when I get hold of a paper on Monday.

Mr M's OCR FSMQ Additional Maths June 2014 Answers


1. $-2.5 < x < 4$ (3 marks)


2. $y=x^3-2x^2+7x-4$ (4 marks)


3. (i) 32 (3 marks)

(ii) 42 (1 mark)


4. (i) $v=0.18t-0.0003t^2$

600 seconds (4 marks)

(i) 10.8 km (2 marks)


5. (i) Angle BAL = 45 degrees and angle ALB = 20 degrees (? marks)

(ii) 14.5 nautical miles (? marks)


6. (i) a = 1 and b = 6 (4 marks)

(ii) x =2, x = 3 and x = -1 (3 marks)


7. (i) $2\sqrt5$ (2 marks)

(ii) $(x-4)^2+(y-9)^2=5$ (3 marks)


8.(i) Prove parallelogram (2 marks)

(ii) Prove rhombus (2 marks)

(iii) Prove not a square (2 marks)


9. (i) Show (1 marks)

(ii) x = 108 degrees and x = 45 degrees (4 marks)


10. (i) (1, -2) (? marks)

(ii) $5y+x+9=0$ (? marks)


11. (i) $V=x(30-2x)(14-2x)$ and show (4 marks)

(ii) $x=3$ and $x=\frac{35}{3}$ (5 marks)

(iii) $x=\frac{35}{3}$ should be rejected as it gives the minimum point.

Maximum volume = 576 cubic cm (3 marks)


12. (i) $\frac{15}{x}+\frac{15}{x-2}$ (2 marks)

(ii) Show (4 marks)

(iii) 6.19 km/hr (3 marks)

(iv) 1 hour 9 minutes (3 marks)


13. (i) $5x+6y \leq 60$ and $4x+3y \leq 36$ (3 marks)

(ii) Plot inequalities (4 marks)

(iii) $V=3.5X+3Y$ and 33 cubic metres (5 marks)


14. (i) The probability of success at each trial is constant and the trials must be independent (2 marks)

(ii) 0.0861 (6 marks)

(iii) 0.787 (4 marks)


Edit: Corrected mistake on 13(iii) and added the answer to the missing question. I'll fill in the missing marks when I get hold of a paper on Monday.

For 5i weren't both the angles 45 as one was 45 and it was a right angled triangle?

Also, for one question I wrote the correct answer, but an incorrect answer was still in the box and not crossed out. Will I still get marks for the correct answer?

The answer that appears to be your last attempt will be marked.

Dear Sir,

Thank you very much!
I have a few questions:

1. For question 4(I) I differentiated to get the expression for velocity but then didn't factorise, so how many marks could I get?

2. For question 9(ii) I got 45 degrees but not the other value so how many marks could I score?

3. Would you still score all the marks for writing the un-simplified version of the inequalities on 13(I)?

4. Do you think 68-ish will be enough for an A?

Thank you!

How would you do 14ii and 14iii?

Thank you so much Mr M!!

Question 5i was worth 3 marks and 5ii was 1 mark.

Do you have any idea if I would get method marks for 5i?? And would I get the mark for 5ii as error carried forward if I made a mistake with the angles?

Dear Sir,

Thank you very much!
I have a few questions:

1. For question 4(I) I differentiated to get the expression for velocity but then didn't factorise, so how many marks could I get?

2. For question 9(ii) I got 45 degrees but not the other value so how many marks could I score?

3. Would you still score all the marks for writing the un-simplified version of the inequalities on 13(I)?

4. Do you think 68-ish will be enough for an A?

Thank you!

For the q on the conditions for binomial expansion would they accept 1) must be picked randomly
2) only two options (ie imperfect and perfect)