Answer:
The required standard form is: 0.000857
Step-by-step explanation:
Consider the provided number.
[tex]8.57\times 10^{-4}[/tex]
If the exponent of 10 is a negative number then move the decimal point to the left.
If the exponent of 10 is a positive number then move the decimal point to the right
Here the exponent of 10 is a negative number so move the decimal point left.
Hence the required standard form is: 0.000857
