Answer:
So after addition number will be [tex]47.4\times 10^{20}[/tex]
Step-by-step explanation:
We have given expression [tex]2.4\times 10^{20}+4.5\times 10^{21}[/tex]
We have to add this expression using scientific notation
So for adding first we have to make power of both the equation same
As [tex]4.5\times 10^{21}[/tex] can be written as [tex]45\times 10^{20}[/tex]
So [tex]2.4\times 10^{20}+4.5\times 10^{21}+2.4\times 10^{20}+45\times 10^{20}=10^{20}(45+2.4)=47.4\times 10^{20}[/tex]
So after addition number will be [tex]47.4\times 10^{20}[/tex]
