,
1) Let's start by writing those expressions, and operate the factors firstly (1.54, 2.3 and 8.9.
So multiplying 1.5 x 2.3 = 3.45 and then the powers 10^-6 x 10^8
[tex]\begin{gathered} 1.5\times10^{-6}\times\frac{2.3\times10^8}{8.9\times10^{13}} \\ \frac{3.45\times10^2}{8.9\times10^{13}}=3.8764\text{ }\times10^{-12} \\ \end{gathered}[/tex]Then we proceed by dividing the factors 3.45 ÷ 8.9 =0.3876 and applying the property of the exponents 10² ÷ 10^13 = 10^-11 , adjusting it to one decimal point to the right we have our final answer:
3.876 x 10^-12
