Question

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Answer 1

Answer:

10. (a), 12. (d) , 13. (c), 9. (a), 6 (d), 7 (b), 1 (c)

Explanation:

10. m = 86/43000

m = 0.002

12. x = 8-3

x= 5

13. 3x = 1-10

3x = - 9

x = - 9/3

x = - 3

9. k+7 = 16

k = 16-7

k = 9

Now by putting the value of k in 2nd equation, we get,

8(9)-72

72-72

= 0

6. 7x = 25 - 4

7x = 21

x = 21/7

x = 3

7. 3x + 7 = - 20

3x = - 20 - 7

3x = - 27

x = - 27/3

x = - 9

1. ax = - b

x = - b/a