Question

What is the difference written in scientific notion?0.00067 - 2.3 * 10^-5

Answer 1

`6.47*10^(-4)`

Step-by-step explanation:

To evaluate the difference:

`0.00067-2.3*10^(-5)`

First, rewrite the expression in the form below:

`=67*10^(-5)-2.3*10^(-5)`

Next, factor out the powers of 10.

`\begin{gathered} =10^(-5)(67-2.3) \\ =10^(-5)(64.7) \\ =64.7*10^(-5) \\ =6.47*10^1*10^(-5) \\ =6.47*10^1^(-5) \\ =6.47*10^(-4) \end{gathered}`

Thus, the difference written in scientific notation is:

`6.47*10^(-4)`

Note: A number is in scientific notation if it is expressed as a product of a number (between 1 and 10) and a power of 10.