Respuesta :

priyodiptobasak

Explanation:

9) a) (9.84×10³)/(6.12×4.27×10³+⁷) = 9.84×10³/6.12×4.27×10¹⁰ = 9.84×10³-¹⁰/6.12×4.27

= 0.376×10^-7.

b) (4.36×10⁸×1.82×10³)/(0.0856×4.7×10⁶)

= (7.9352×10⁸+³)/(0.40232×10⁶)

= 19.72×10⁸+³-⁶ = 19.72×10⁵

hope this helps you.