2015年7月22日 · More simply, x=6 (logarithms are unnecessary in this case). 81=3^{4} and 27=3^{3}, so this equation can also be written as 3^{4x}=3^{3(x+2)}=3^{3x+6}. Since the bases …

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 …

2016年11月17日 · #27^x=81# change to the same base numbers #(3^3)^x=3^4# #3^(3x)=3^4# #=>3x=4# #x=4/3# Answer link. Related ...

sqrt 27^x = 81 Answer by KMST(5327) (Show Source): You can put this solution on YOUR website! I know that ...

Click here to see ALL problems on logarithm; Question 1032657: Suppose 81^x = 64. What is 27^{x+1}? Answer by robertb(5830) (Show Source):

Question 389791: what is the value of x in: 81^x+2 = 27^5x+4 Answer by Alan3354(69443) (Show Source):

You can put this solution on YOUR website! 9(^2x-1)= (81^(x+1)(27^-x) (3^2)^2x-1=(3^4)^x+1(3^3)^-x Change 9,81and 27 to bases of 3

2017年8月21日 · L = f(a)+f'(a)(x-a) (This is an equation of the tangent line at (a,f(a))) f(x) = x^(3/4), a = 81 f(81) = (root(4)81)^3 = 3^3 = 27 f'(x) = 3/(4x^(1/4)), so f'(81) = 3 ...

How does the -9 outside of the ( ) reduce (x/-9) to x? Shouldn't it be -9(-9)=81? No, because the is the same thing as the fraction So it's the same as And then the -9 in the the numerator cancels …

2017年7月25日 · Constant of variation is 3 y prop x or y = kx ; y=81 , x=27 :. 81 = k*27 or k = 81/27=3 :. y=3x Constant of variation is k=3 and variation equation is y=3x [Ans]