(Solved): I'm so bad at math. Please help me understand. i know its more than one but i really need the help # ...

\( \sqrt{2}, 0.5, \frac{4}{5},-1,0,40, \pi, 10,-1.67 \) 1. Which are integers? 2. Which are natural numbers? 3. Which are rational numbers? 4. Which are irrational numbers? 5. Which are whole numbers? 6. Which are rational numbers that are not inte- 7. Which are integers that are not positive? 8. Which are real numbers? In Exercises 9-14, name the property illustrated by each equality. 9. \( 3 \cdot(8 \cdot 9)=(3 \cdot 8) \cdot 9 \) 10. \( (5+x)+z=5+(x+z) \) 11. \( -4(x-2)=-4 x+8 \) 12. \( 3 x+y=y+3 x \) 13. \( 9(a)=a(9) \) 14. \( b(x+2)=b x+2 b \) In Exercises 15-18, find the indicated set given. \[ A=\{-2,-1,0,2,3,5\} \quad B=\{-2,0,2,4,6\} \quad C=\{1,3,5,7\} \] 15. a. \( A \cup B \) b. \( A \cap B \) 16. a. \( A \cup C \) b. \( A \cap C \) 17. a. \( (A \cup B) \cup C \) b. \( (A \cup B) \cap C \) 18. a. \( (A \cap B) \cup C \) b. \( (A \cap B) \cap C \) \[ \sqrt{2}, 0.5, \frac{4}{5},-1,0,40, \pi, 10,-1.67 \] 1. Which are integers? \( \frac{4}{5},-1,0,40,10 \) 2. Which are natural numbers? 40,10 3. Which are rational numbers? 4. Which are irrational numbers? \( 0.5, \frac{4}{5},-1,0,40,10,-1,67 \) 6. Which are rational numbers that are not inte- 5. Which are whole numbers? gers? 7. Which are integers that are not positive? 8. Which are real numbers? In Exercises 9-14, name the property illustrated by each equality. 9. \( 3 \cdot(8 \cdot 9)=(3 \cdot 8) \cdot 9 \) 10. \( (5+x)+z=5+(x+2) \) 11. \( -4(x-2)=-4 x+8 \) 12. \( 3 x+y=y+3 x \) 13. \( 9(a)=a(9) \) 14. \( b(x+2)=b x+2 b \)