ANSWER
[tex]6.84\times 10^9[/tex]
EXPLANATION.
To write in scientific notation means , we write in form,
[tex]k\times 10^n[/tex]
Where n is an integer and
[tex]1\le k\:<\:10[/tex]
The given number is,
[tex]6,840,000,000[/tex]
We move the decimal point backward to obtain our k, the n here is 9, because we moved backward 9 times.
This implies that,
[tex]6,840,000,000=6.84\times 10^9 [/tex]
The correct answer is D
Answer:
first question its D 6.84 x 10^9 m Second is B 1.43 x 10^-10 g
Explanation:
