1. 1 and -1 are two such rational numbers whose multiplicative inverse is same as they are.
2. absolute value is resembled using the formula : |x|
Here,
[tex]\hookrightarrow \sf |\dfrac{-3}{11} |[/tex]
[tex]\hookrightarrow \sf \dfrac{3}{11}[/tex]
final answer: 3/11
3.
[tex]\hookrightarrow \sf \dfrac{1}{2} \div \dfrac{3}{5}[/tex]
[tex]\hookrightarrow \sf \dfrac{1}{2} * \dfrac{5}{3}[/tex]
[tex]\hookrightarrow \sf \dfrac{5}{6}[/tex]
4.
Associative property can only be used with addition and multiplication
