(2.456 x 10-1)-1
= 0.407 x 10-1 = 0.04072
4.3622 = 19.027
0.0407 + 19.027
0.0407 + 19.027 = 19.06772
= 19.07 correct to 4 s.f
johnmulu answered the question on March 9, 2017 at 06:36
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