Given that (a^{frac{5}{6}} times a^{frac{-1}{n}} = 1), solve for n.
-
A.
-6.00 -
B.
-1.20 -
C.
0.83 -
D.
1.20
Correct Answer: Option D
Explanation
(a^{frac{5}{6}} times a^{frac{-1}{n}} = 1)
(implies a^{frac{5}{6} + frac{-1}{n}} = a^{0})
Equating bases, we have
(frac{5}{6} – frac{1}{n} = 0)
(frac{5n – 6}{6n} = 0)
(5n – 6 = 0 implies 5n = 6)
(n = frac{6}{5} = 1.20)