Final answer:
The number 6,890,000 square miles can be written in scientific notation as 6.89 × 10^6 square miles. To convert this number into scientific notation, we need to move the decimal point to the left until we have only one digit to the left of the decimal point.
Step-by-step explanation:
The number 6,890,000 square miles can be written in scientific notation as 6.89 × 106 square miles.
To convert this number into scientific notation, we need to move the decimal point to the left until we have only one digit to the left of the decimal point. In this case, we need to move the decimal point 6 places to the left, resulting in a number less than 10. The exponent will be equal to the number of places the decimal point was moved to the left, which is 6. The number in front of the decimal point will be the digit to the left of the original decimal point, which is 6.89.