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Logarithm
If log10 7 = a, then log10 ❨ 1 ❩ is equal to: 70
- (1 + a)
(1 + a)-1
a 10
1 10a
Show Answer
Correct Answer:
- (1 + a)
Explanation:
log
10
❨
1
❩
70
= log
10
1 - log
10
70
= - log
10
(7 x 10)
= - (log
10
7 + log
10
10)
= - (
a
+ 1).
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