Page 23 - PRAKTIS HEBAT ADDMATHS TG4

Additional Mathematics Form 4 Answers
11. (a) xy (c) (i) 5.18
(ii) y = AB
x
36.04 – 4
40
13. (a) log y
35 10
30 1.1
25 1.0

20 0.9
15 0.8
0.74
10 0.7
5 0.6

0 x 0.5
1 2 3 4 5 6
–5 0.4
–6
0.3
(b) (i) g = 65.12, h = –0.09
(ii) 5 0.2 0.18
12. (a) 1 0.1
— 0.69 0.52 0.50 0.40 0.25 0.20
x
0 x
y 2 1 2 3 4 5 6 7
— 20.86 14.74 13.99 10.40 5.00 3.20
x
(b) (i) 1.43
(b) y 2 (ii) 0.66
x (iii) 5.50
14. (a) log P = log a + (log 36)kt
10
10
10
20
(b) log P
18 10
16 2.5
14 2.0
12.2
12 1.5
10 1.0

8 0.5
0.075
6 0 t
1 2 3 4 5 6
4
(c) a = 1.19, k = 0.28
2
1
0 x
0.1 0.2 0.3 0.4 0.5 0.6
–2

–4

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