SOLUTION: 9^X = 1/243

Question 187155: 9^X = 1/243
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
9^X = 1/243
Take log9 (log base 9) of both sides:
X = log9(1/243)
X = log9(1) - log9(243)
X = log(1)/log(9) - log(243)/log(9)
X = 0/log(9) - log(243)/log(9)
X = -log(243)/log(9)
X = -2.5

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