Question

How do you spell 4 billion in scientific notation

Answer 1

4 bilion = 4 × 10⁹

Explanation:

The scientific notation:

`a\cdot10^k`

where

`1\leq a<10,\ k\in\mathbb{Z}`

4 billion:

in USA: 4,000,000,000

in Europe: 4 000 000 000 000

`4\underbrace{000000000}_9=4\cdot10^9`