Answer
$x=4\times10^{5}$
Work Step by Step
$x=\frac{1.2\times10^{4}}{3\times10^{-2}}$
$x=(\frac{1.2}{3})\times(\frac{10^{4}}{10^{-2}})$
$x=0.4\times10^{4-(-2)}=0.4\times10^{6}$
Write 0.4 in scientific notation.
$0.4=4\times10^{-1}$
$x=4\times10^{-1}\times10^{6}=4\times10^{5}$
