Answer
$5 \times 10^1$
Work Step by Step
Write each number in scientific notation to obtain:
$=\dfrac{3 \times 10^{-6}}{6 \times 10^{-8}}$
Divide 3 and 6 together and the powers of 10 together to obtain:
$=\dfrac{3}{6} \times \dfrac{10^{-6}}{10^{-8}}
\\=0.5 \times 10^{-6-(-8)}
\\=0.5 \times 10^{-6+8}
\\=0.5 \times 10^2
\\=(5 \times 10^{-1}) \times 10^2
\\=5 \times 10^{-1+2}
\\=5 \times 10^1$
