Page 184 - Mathematics

1 19
x =- 3 x = 3
(c)

x =-16 x = 8
(d)

1
5. (a) p = 15 (b) r = 6.75 (c) x = − (d) y = 0
4
1
7. (a) x = (b) x = − (c) x =
2
6
4
Tanzania Institute of Education
8. (a) x = 66° (b) x = 47.5°

Exercise 5.4

1. 12 years 7. m 20 or 28 13. 9
3. 18 and 19 9. 16 15. The number is 4

5. y = 10 11. Daughter 4 years and mother 32 years

Exercise 5.5

1
1. x = 2, y = 7. x = − 1, y = 2 13. u = 2, v = − 2
1
1
2
4
3. x = 4, y = 9. x = 8, y = 15. m = , n = 7
3
5. x = 3, y = 1 11. x = − 1, y = 3

Exercise 5.6
1. x = 3, y = 9. a = − 1, b = 23
Mathematics Form One 3. x = 2, y = 11. x = 6, y = 10
2

2
3
12, y =
8, y =
3
5. x =
13. x =
2, y =
2
7. x =
5
8, y =
15. x =
178

25/10/2024 09:52:18
Mathematics form 1.indd 178 25/10/2024 09:52:18
Mathematics form 1.indd 178