Answer:
After multiplication number will be [tex]3.5\times 10^{-5}[/tex]
Step-by-step explanation:
We have given numbers which has to multiply using scientific notation
[tex]7\times 10^{-9}\times 5\times 10^5[/tex]
We have to multiply the above number using scientific notation
We know that when two number are multiplied then there exponent power is being added
So when we multiply [tex]7\times 10^{-9}\times 5\times 10^5[/tex] there power will be added and after multiplication number will be [tex]35\times 10^{-4}=3.5\times 10^{-5}[/tex]
