Answer: [tex]9.5\times 10^5[/tex]
Step-by-step explanation:
The given exponents : [tex] 4.2\times10^5[/tex] and [tex] 5.3\times10^5[/tex]
When we add them together , we get
[tex] 4.2\times10^5+5.3\times 10^5 \\\\=(4.2+5.3)\times10^5\ \ \text{[By using distributive property } ba+ca=(b+c)a]\\\\= 9.5\times10^5[/tex]
Hence, the sum of [tex] 4.2\times10^5[/tex] and [tex] 5.3\times10^5=9.5\times 10^5[/tex]
