Answer:

Step-by-step explanation:
Use distributive property.

Just divide both sides of the equation by -12 and you get your answer. Hope that helped!
Answer: each time the pentagon is rotated 72, it maps back onto itself. There are five values of a for which the pentagon maps back onto itself. this is the same as the number of sides of the pentagon.
Step-by-step explanation: edmentum
It would be 4.0
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