Respuesta :

0.0238 <== ur answer
[tex]a^{-n}=\dfrac{1}{a^n}\\\\10^{-2}=\dfrac{1}{10^2}=\dfrac{1}{100}=0.01\\\\2.38\cdot10^{-2}=2.38\cdot0.01=\boxed{0.0238} [/tex]