Answer:
[tex]8.5*10^{6}[/tex]
Step-by-step explanation:
Assuming the problem asks for [tex]\frac{3.8 * 10^{9}}{400}[/tex]:
We know that [tex]400=4*100=4*10^{2}[/tex].
So, we want to calculate [tex]\frac{3.8*10^{9}}{4*10^{2}}[/tex].
Isolating different parts of the fraction gives us [tex]\frac{3.8}{4}*\frac{10^{9}}{10^{2}}=\frac{1.7}{2}*10^{7}=0.85*10^{7}[/tex] and we're done!
But wait! In scientific notation the number that's not an exponent(I forget the word for it :( ) has to be between 1 and 10! So, it's really equal to [tex]8.5*10^{-1}*10^{7}=\boxed{8.5*10^{6}}[/tex] and we're(actually) done!
