(86)(0.45) help of logarithm table
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Answer:
-0.347
Step-by-step explanation:
log 0.45 can be written as
log 45/100
= log 45- log10²
= log 3²*5- 2log 10
= 2log 3 + log 5 -2*1 (log 10 to the base 10 = 1)
= 2*0.477+0.699- 2
= 1.653-2
= -0.347
Note : assumed base value as 10 and
log 3 = 0.477 and
log 5 = 1- log2 = 1-0.301= 0.699
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