Answer:
Step-by-step explanation:
From law of indices
Answer:
5.4217 • 10¹
Step-by-step explanation:
4.5 • 10⁻² ÷ 8.3 • 10⁻⁴
450 ÷ 8.3
54.21686...
54.217
5.4217 • 10¹
I hope this helps
The answer to you question is B for number 1 and for 2 it is C. Hope this helps