Question

How do you write the number 0.000000009 in scientific notation?

Answer 1

`9 xx 10^(-9)`

Explanation:

Given:

`0.000000009`

Count the number of places that the number needs to be shifted to the left in order to result in a number in the range `[1, 10)`.

In our example, we need to shift it `9` times.

Hence in scientific form we have:

`0.000000009 = 9 xx 10^(-9)`