Question

2. Scientific Notation

Answer 1

Answer:

$\huge\boxed{78,000,000,000=7.8\times10^{10}}$

Step-by-step explanation:

$\text{The scientific notation:}\\\\a\times10^k\\\\\text{where}\ 1\leq a$

$\text{We have:}\\\\78,000,000,000\Rightarrow7\underbrace{8,000,000,000}_{\leftarrow10}=7.8\times1\underbrace{0,000,000,000}_{10}=7.8\times10^{10}$