Question

Express in scientific notation. Choose the answer with the proper number of significant figures. please help? A). 2 x 10^8 B). 2.0 x 10^8 C). 2.0^8

Answer 1

`(9xx10^9)/(4.5xx10^1)=2xx10^8`

Explanation:

Now `a^x/a^y=a^(x-y)`

And so.... `(9xx10^9)/(4.5xx10^1)=(9)/(4.5)xx10^(9-1)=2xx10^8`

I think you need to work on your multiple choice options...