The answer to this problem is

Answer:
-4/9
Step-by-step explanation:
5*8 = 40
6*15 = 90
You keep the negative and add it to the final product which is -40/90.
Decimal is: -0.444444444444444444444444444444444444444444444444444444444444444
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Answer:
C
Step-by-step explanation:
6a^2 is the formula
plug in and solve
I think the answer is 6. ABC, ACB, BAC, BCA, CAB, and CBA.