If x is a positive number and 1/3 the square root of x is equal to 3x, then x =
Answers:  A) 1/3  B) 1/9  C) 1/81  D) 1  E) 81
1/3 of sqrt(x) = 3x, which means that sqrt(x) = 9x   or x = 81x^2 -&gt; divide by x   1=81x   x=1/81   1/81.
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If x is a positive number and 1/3 the square root of x is equal to 3x, then x =