Question on: JAMB Mathematics - 1994
Evaluate (\frac{log_5 (0.04)}{log_3 18 - log_3 2})
A
1
B
-1
C
\(\frac{2}{3}\)
D
-\(\frac{2}{3}\)
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Correct Option: B
(\frac{log_5 0.04}{log_3 18 - log_3 2})
= (\frac{log_5 0.04}{log_3(\frac{18}{2})})
= (\frac{log_5 0.04}{log_3 9})
= (\frac{-2}{2})
= -1
Let log5 0.04 = x
5x = 0.04
x = (\frac{4}{100}) = 5-2
Let log3 9 = z
32 = 32
z = 3
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