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14 Jun 2017, 03:43
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If \(9^{(2 − x)} = 3^{(x − 1)}\), what is the value of x?
A. 3
B. 5
C. 5/2
D. 5/3
E. 3/5
A. 3
B. 5
C. 5/2
D. 5/3
E. 3/5
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14 Jun 2017, 03:48
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Bunuel
If \(9^{(2 − x)} = 3^{(x − 1)}\), what is the value of x?
A. 3
B. 5
C. 5/2
D. 5/3
E. 3/5
A. 3
B. 5
C. 5/2
D. 5/3
E. 3/5
\(9^{(2 − x)} = 3^{(x − 1)}\)
\(3^{2(2 − x)}= 3^{(x − 1)}\)
\(3^{(4 − 2x)}= 3^{(x − 1)}\)
4 - 2x = x - 1
3x = 5
x = 5/3.
Answer (D)
Luckisnoexcuse
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14 Jun 2017, 04:01
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Bunuel
If \(9^{(2 − x)} = 3^{(x − 1)}\), what is the value of x?
A. 3
B. 5
C. 5/2
D. 5/3
E. 3/5
A. 3
B. 5
C. 5/2
D. 5/3
E. 3/5
Equation becomes
3^ (4-2x) = 3^ (2-x)
On solving x= 5/3
