Question

Which choice correctly expresses the number below in scientific notation 0.0000431

Answer 1

Scientific notation is form
`a * 10^(x)`, where 1 ≤ a < 10. So, you have to write like this:

`0.0000431 = 0.000431 * 0.1 = ... = 4.31 * 0.00001 = 4.31 * 10^(-5)`
since
`0.00001 = 10^(-5)`
So, the answer is
`4.31 * 10^(-5)`