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If 3^m=81
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08 Oct 2017, 00:49
08 Oct 2017, 00:49
Expert Reply
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Question Stats:
98% (00:36) correct
1% (00:00) wrong based on 52 sessions
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If \(3^m = 81\) then \(m^3 =\)
A. 9
B. 16
C. 27
D. 54
E. 64
Re: If 3^m=81
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09 Oct 2017, 01:45
09 Oct 2017, 01:45
Carcass wrote:
If \(3^m = 81\) then \(m^3 =\)
A. 9
B. 16
C. 27
D. 54
E. 64
we can re write as -
\(3^m = 81\) = 3^4[/m]
Therefore m = 3
Now
\(m^3 = 4^3\) =64
Re: If 3^m=81
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09 Oct 2017, 07:00
09 Oct 2017, 07:00
pranab01 wrote:
Carcass wrote:
If \(3^m = 81\) then \(m^3 =\)
A. 9
B. 16
C. 27
D. 54
E. 64
we can re write as -
\(3^m = 81 = 3^4\)
Therefore m = 3
Now
\(m^3 = 4^3\) =64
There is a typo.
Rewriting the equation as \(3^m = 3^4\), it results that \(m=4\).
Then, what follow is right. \(m^3 = 4^3\) =64.
Answer E
