Question

A scientist measured the wavelength of an X-ray as 0.0000000065 meters. ​ ​Write the number in scientific notation.

Answer 1

`6.5 * 10^(-9)`

Explanation:

The scientific notation of a number is to express the number in the form
`x* 10^(y)` where x is the base of ten.

So, if we want to express the number 0.0000000065, then we can write it as

`(6.5)/(1000000000) = 6.5 * 10^(-9)`.

So, we can write 0.0000000065 as
`65* 10^(-10)` or
`0.65 * 10^(-8)` but those are not the scientific notation.

Therefore,
`6.5 * 10^(-9)` is the scientific notation of 0.0000000065. (Answer)