X. Answer the following questions:
1. Is 0.9 a rational number?
3. What is the additive identity for rational numbers?
5. Additive inverse of -a/b is a/b is Is it a correct statement?
6. Express 14/38 in its lowest term.
8. Arrange- 7/10,5/-8 and 2/-3in ascending order.
10. Simplify: (7/3÷10/9)×5/11
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Answer:
Step-by-step explanation:
1. yes 0.9 is rational
3. additive identity makes number 0 when added e.g. for 2 it is -2
5. correct -a/b + a/b = 0
6. 14/38 =7/19
8. make denominator same
-7/10 = -168/240
5/-8 = -150/240
2/-3 = -160/240
in ascending order -7/10;2/-3;5/-8
10. (7/3÷10/9)* 5/11 = 7/3*9/10*5/11 = 315/330 =21/22
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