Answer:
8.629 * 10^5
Explanation:
862,900
Scientific notation is of the form a * 10 ^b where a is between 1 and less than 10
Move the decimal 5 places to the left so that there is one number before the decimal
Since we moved the to left the 5 is positive and it is our value for b
8.62900* 10 ^5
The zeros at the end of the decimal are extra and can be left off
8.629 * 10^5