Question 396163: 81=27x
Answer by CharlesG2(834)   (Show Source):
You can put this solution on YOUR website! 81=27x
if this is 81 = 27x, then 81/27 = x, simplified 3 = x
if this is 81 = 27^x and you want to know what the exponent x is:
logarithmic rule: if b^x = y, then logb y = x, where b is the base
log27 81 = x
logarithmic rule: logb x = (logk x)/(logk b)
logarithmic rule: when base omitted log is assumed to be log10
log27 81 = (log 81)/(log 27) = x
x = 1.333...
x = 4/3
27^(4/3) = 81
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