Answer:
5.68 x 10^5
Step-by-step explanation:
(5.3 x 10^5) + (3.8 x 10^4)
= 10^4 [(5.3 x 10) + 3.8]
= 10^4 (53 + 3.8)
= 10^4 (56.8)
= 56.8 x 10^4
= 5.68 x 10^5
The answer is 5.68* 10^5
