9 because if you set up your proportion you get 12/6=18/? And if you divide 18 by 12 you get 1.5 and if you multiply that by 6 you get 9
Answer:

Step-by-step explanation:

Find the derivative of the fraction

Convert the decimal number to a fraction

The derivative of a constant is always 0

Match the following.
Given A = {1, 2, 3, 4, 5} B = {2, 4, 6} C = {1, 3, 5}
1. A ∪ B {1, 2, 3, 4, 5, 6}
2. A ∪ C {1, 2, 3, 4, 5}
3. A ∩ B {2, 4}
4. A ∩ C {1, 3, 5}
5. B ∩ C null, or empty set
Answer:
3 seconds.
Step-by-step explanation: