Answer:
Step-by-step explanation:
Scientific Notation is the way of writing large numbers in shorthand
Thus 4,000,000,000 is [tex]4*10^{9}[/tex] or [tex]0.4*10^{10}[/tex]
We get 10^9 because 4000000000 has 9 zeros after the four
We get 10^10 because since the 4000000000 has nine zeros, we shifted the 4 behind the decimal point, so we need another zero.