Posted in Exam Answers

Suggested answers to GCE O Level 2014 Math (4016) Paper 2

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1(a) x < 1/2

1(b)(i) W = 126

1(b)(ii) u = +- Sqrt(v^2 – 2W/m)

1(c)  2x / (x – 4y)

1(d) x = 7 or -1

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2(a) 4.12 x 10^10 kWh

2(b) 40.5% (to 3 SF)

2(c) 1439 kWh (to the nearest kWh)

2(d) 26.2% (to 3 SF)

2(e) 5725 GWh (to the nearest GWh)

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3(a) p = 11.4

3(b) cubic graph

3(c) Near exact answers are x = -1.54, 3.84 or 1.69 (examiners accept answers within a small range)

3(d) Exact answer for the gradient is -5.2 (examiners accept answers within a small range).

3(e) (i) straight line with positive gradient intersects the curve at one point.

3(e)(ii) Near exact answer is (4.24, 0.83) (examiners accept answers within a small range)

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4(a) 83 deg

4(b) Use AA property

4(c) Triangle EAB

4(d)(I) 5:3

4(d)(ii) 82.62 cm squared

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5(a)(I) (-6, -7) in vertical form (2×1 matrix)

5(a)(ii) 9.22 units

5(a)(iii) (4, 8.5)

5(b)(I) 4y + 3x = 16

5(b)(ii) (-2, 5.5)

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To be continued …….

 

Posted in O Level

Suggested answers to GCE O Level 2014 Math (4016) Paper 1 (via crowdanswering)

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1) sqrt (0.48), 0.702, 27/38, 0.61

2) 3.90 swiss francs

3a) 629.25

3b) 630

4) 47.9 deg or 132.1 deg (or 0.836 rad or 2.31 rad)

5) zero hours not offered; the choices given for the intervals for the number of hours spent are not continuous; time limit, such as per day or per week, not set.

6) – 1/3 (corrected)

7) 112

8) 79.4%

9a) 1000

9b) 200%

10a) 32 sec

10b) 7.5 sec

11) $78.50

12) x = 3 cm, y = 5 cm, z = 15 cm

13) $7500

14a) 1/3 (b a)

14b) vector DC cannot be expressed as k(vector OA), so vectors DC and OA are not parallel.

15a) Two circles overlapping

15b) {4,6,7,8,9,10,11}

16a) 3b^5/2a

16b) (8x-5)/(x-3)^2

17a) a = 5, b = 19, c = 26

17b) 7n – 2

c) There is no integer value of n such that 7n-2 = 109

18a) 8  11/18 m/s

18b) 9 min 43 sec

19a) graph curves upwards, passes thru origin

19b) s = 2.25 t^2

19c) 2.98 sec

20a) 1/4

20b) 1/16

20c) 55/64

21ai) (2.6 4.3 6.8) as in 3×1 matrix

21aii) E = (151.4 135.4) as in 2×1 matrix

21aiii) It represents the masses of the coins saved by Lin and Hadi respectively

21b) (10 20 100) as in 3×1 matrix

22) $644.17

23a) 314 cm^2

23b) 5 cm by 7 cm by 11 cm

23c) 42

24a) 9(x-1)

24b) 57 cm

24c) 196 cm^2

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Suggested answers to GCE O Level 2014 Math (4016) Paper 2

 

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Posted in Intensive Revision, O-Level Math

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Posted in Intensive Revision, O-Level Math

O-Level E. MATH Crash Course / Intensive Revision 29 Sep 2014

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Fee: $360

Max. no. of students:  8.

Tutor: Mr Ilyasa (ex-sch teacher, M.Ed, PGDE, B.Sc).

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To register, sms <Student Name><EMATH29SEP> to 97860411.

For any queries, you may also talk directly to Mr Ilyasa at 97860411.

Posted in Crash Course, O-Level Math, Sec Math

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