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06 Oct 2017, 02:44
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D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
95% (00:48) correct
5%
(01:38)
wrong
based on 143
sessions
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Not Attempted Yet
[GMAT math practice question]
If \(8x=2^y\), what is the value of x, in terms of y?
A. \(x=2^{3y-2}\)
B. \(x=4y\)
C. \(x=4^{y-2}\)
D. \(x=2^{y-3}\)
E. \(x=2y\)
If \(8x=2^y\), what is the value of x, in terms of y?
A. \(x=2^{3y-2}\)
B. \(x=4y\)
C. \(x=4^{y-2}\)
D. \(x=2^{y-3}\)
E. \(x=2y\)
06 Oct 2017, 04:26
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MathRevolution
\(8x=2^y\) ==> \(2^3x=2^y\) ==> \(x=2^y/(2^3)\) ==>\(x=2^{y-3}\)
Ans - D
08 Oct 2017, 18:05
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=>
\(8x = 2^y ⬄ 2^3x = 2^y ⬄ x = 2^{y-3}\)
Answer : D
\(8x = 2^y ⬄ 2^3x = 2^y ⬄ x = 2^{y-3}\)
Answer : D
