Answer:
Explanation:
1) rational number
2) 5/4 = 1.25 rational number
3) √11 irrational number
4) - 12 rational number
5) (6*8) *5 = 6*(8*5) Associative property of multiplication
6) 7*(9-5) = 7*9 - 7*5 Distributive property upon subtraction
7) 84 + 16 = 16 +84 Commutative property of addition
8) (12 +5) *6 = 12*6 + 5*6 Distributive property upon addition
Given number additive inverse multiplicative inverse
9) - 7 +7
![(-1)/(7)](https://img.qammunity.org/2021/formulas/mathematics/middle-school/gtumiymjs07xpngwkiwngwgvz6u5r18t1d.png)
10)
![(9)/(4)](https://img.qammunity.org/2021/formulas/mathematics/high-school/77f5keq1j9if5q15ywfw2i1fprvt670td8.png)
11) 3.8 -3.8
![(1)/(3.8)](https://img.qammunity.org/2021/formulas/mathematics/high-school/tjsylsfmv82130faawuwyciyahrc1oq9wm.png)
12) √5 -√5
![(1)/(√(5) )](https://img.qammunity.org/2021/formulas/mathematics/high-school/brdwgl68rosxtf9t5d5nec0pbgjbcwnu9f.png)
Hint:
To find additive inverse, just reverse it's sign
a additive inverse is -a
-a additive inverse is a
Multiplicative inverse of a number 'x' is 1/x
Multiplicative inverse of a fraction a/b is b/a