Answer:
3
Step-by-step explanation:
First, simplify the powers.
(3)^-9 = (1)/(3^9)
Multiply across.
(3^10) x 1 = 3^10
(3^10)/(3^9)
Note that when you divide power signs, as long as the base is the same, you can subtract the power sign.
(3^10)/(3^9) = 3^(10 - 9) = 3^1 = 3
3 is your answer.
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