6.
[tex]a) \ 0,000054 \ kg = \boxed{5,4\cdot10^{-5} \ kg}\neq 5,4\cdot10^{-6} \ kg\\\\b) \ TAK\\\\c) \ 38\cdot10^{7} = 3,8\cdot10\cdot10^{7} = \boxed{3,8\cdot10^{8}}\\\\d) \ 950000 \ km = \boxed{9,5\cdot10^{5} \ km}[/tex]
