Respuesta :

ljin3634
(2.0×10^-4)×(3.1×10^-20)
=(2.0×3.1)×(10^4×10^-20)
=6.2×10^(-4+(-20))
=6.2×10^-24.

Answer: 6.2 × 10^-24

Please mark brainliest~

Answer:

what the guy above me said is right i was gonna say that:(

Step-by-step explanation: