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given that log 2= 0.69,log 3= 1.20 and log 7= 1.80. find log 10.5 without using tables.​

Sagot :

Answer:

2.31

Step-by-step explanation:

log 10.5 = log 212

= log 21 - log 2

= log(3 x 7) - log 2

= log 3 + log 7 - log 2

= 1.10 + 1.90 - 0.69

= 3 - 0.69

= 2.31