SOLUTION: 81=27x

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

RELATED QUESTIONS
27x^2+9y^2=81 (answered by Alan3354)

Solve: 27x + 2 = 81-2 + x (answered by mananth,Fombitz)

1/2(16x-2)=1/3(81-27x)+6 I need to solve for... (answered by JP)

What are the foci for the equation... (answered by ewatrrr)

Hi, I need to multiply (3x+9)^2...my answer is 3x^2+27x+81...am I... (answered by bucky)

3{{{-27x^15y^81}}} Simply the expression and check your answer by raising it back to the (answered by ikleyn)

81... (answered by fractalier)

PLEASE HELP ME FIND THE INDICATED ROOTS (answered by checkley77)

Given that {{{u = log(base9)x}}}, find in terms of u, i) {{{log(base3)x}}} ii)... (answered by lwsshak3)