SOLUTION: 1) if 8^x=4, what does 8^-3x equal?
2) 2^(7-3x)=1/4, x=?
3) 4^(3x-7)=16, x=?
4) 9^2x * 27^(3-x)=1/9, x=?
5) log3^9=x
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Question 943359: 1) if 8^x=4, what does 8^-3x equal?
2) 2^(7-3x)=1/4, x=?
3) 4^(3x-7)=16, x=?
4) 9^2x * 27^(3-x)=1/9, x=?
5) log3^9=x
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
1) if 8^x=4, what does 8^-3x equal?
cube both sides
..
2) , x=?
7-3x=-2
3x=9
x=3
..
3) , x=?
3x-7=2
3x=9
x=3
..
4) , x=?
9+x=-2
x=-11
..
5) log(3^9)=x
10^x=3^9
xlog10=log(3^9)
x=log(3^9)
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