Answer:
[tex]\Huge \boxed{\mathrm{7. \ C}} \\\\ \\ \Huge \boxed{\mathrm{8. \ B}} \\\\\\ \Huge \boxed{\mathrm{9. \ D}} \\\\\\ \Huge \boxed{\mathrm{10. \ D}} \\\\\\ \Huge \boxed{\mathrm{11. \ A}}[/tex]
[tex]\rule[225]{225}{2}[/tex]
Step-by-step explanation:
7.
The Commutative Property of Addition changes the order of the numbers but does not affect the sum.
8.
We will convert the values into decimals for simplicity.
[tex]\sqrt{7} \approx 2.65[/tex]
[tex]\sqrt{3} \approx 1.73[/tex]
[tex]\displaystyle \frac{-1}{3} \approx -0.33[/tex]
Arranging from least to greatest:
[tex]\displaystyle -2.3, \ \frac{-1}{3} , \ \sqrt{3} , \ \sqrt{7} , \ 5.1[/tex]
9.
2 + ( -8 )
2 is on the number line.
When -8 is added to 2, the value decreases, and it moves 8 units to the left side.
The result is -6.
(image)
10.
The two subsets of real numbers are rational and irrational numbers.
[tex]\sqrt{13}[/tex] is an irrational number.
11.
[tex]\displaystyle \frac{12x-8}{4}[/tex]
[tex]\displaystyle \frac{12x}{4}-\frac{8}{4}[/tex]
[tex]3x-2[/tex]
[tex]\rule[225]{225}{2}[/tex]
