Apps. and Interpretation for IBDP Maths Ebook 1 | Seite 387

Answers
81.2 (a) (i)
5
36
(ii)
5
18
(iii)
3
5
(b) (i)
7
12
(ii) 3.2
81.3 (a) (i)
1
9
(ii)
5
9
(iii)
2
5
(b) 9
81.4 (a) (i)
1
9
(ii)
2
9
(iii)
5
6
(b) 72
Chapter 20
Exercise 82
82.1 (a) 2.5
(b) 1.875
(c) 0.250
82.2 (a) 30
(b) 72
(c) 0.140
82.3 (a) 0.8
(b) 16
(c) 0.205
82.4 (a) 0.45
(b) 4000
(c)
2.3511�
10 �11
Exercise 83
83.1 (a) 4.8
(b) 0.0131
(c) 0.0000749
83.2 (a) 16.2
(b) 0.0598
(c) 0.455
83.3 (a) 1
(b) 5.60�
10 �7
(c) 0.922
83.4 (a) 6.21
(b) 0.270
(c) 0.00527
Exercise 84
�120�
� �p
1�
p
� 3 �
(b) 0.0149 or 0.0388
3
84.1 (a) � � 117
84.2 (a)
84.3 (a)
84.4 (a)
4
5 p (1 � p)
(b) 0.638 or 0.914
(b) 0.654
10 q (1 �q)
� q
(b) 0.0524
Exercise 85
85.1 (a) 0.4016
(b) 0.833
(c) 0.310
(d) 3
85.2 (a) 0.26
(b) 0.692
(c) 0.222
(d) 10
85.3 (a) 0.383
(b) 0.847
(c) 0.285
(d) 10
9 10
(1 � q) �100 q(1 � q)
100 99
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