Answers to Maths Paper 2 `09

1a) 13.70

1b) 4.740740 > express as recurring decimal (which means place the dot on top of 7 and 0.

2a) 2 to the power o f 3 x 3 x 5 to the power of 2

2b) 45

3) 0924

4a) -372

4b) r to the power of 3 + 3s over t

5a) 7ab - 8a

5b) -128 + 100x or 100x - 128

5c) 17 + 6m over 20

6a) 3(3h - 1)(g + 5)

6b)i) 1 over 2

6b)ii) x = 24

7a) Angle AOD = 65.5 degree

7b) x = 230 degree

Q8 > Don't need to do :D

9a) Ah Seng = 12 years old
Ah Yong = 18 years old

9b)i)(2x + 24) years old

9b)i) (4x - 12) years old

9b)iii) 15 years old