The Andromenia Spiral is a galaxy 2,200,000 light years from Earth. write this distance in scientific notation
2.2 * 10^6
2.2 * 10^? light years.
For millions, the exponent of 10 is 6.
To write the distance of 2,200,000 light years in scientific notation, follow these steps:
Step 1: Determine the coefficient
Start by moving the decimal point in the number until it is between 1 and 10. In this case, we can write 2,200,000 as 2.2 (since we moved the decimal point six places to the left).
Step 2: Count the number of decimal places moved
In scientific notation, we need to indicate the number of decimal places the original number has been moved. In this case, we moved the decimal point six places to the left, which means we multiply by 10^6.
Step 3: Write in scientific notation
Combining the coefficient and the exponent, we have:
2.2 × 10^6 light years
Thus, the distance of the Andromenia Spiral galaxy from Earth can be written as 2.2 × 10^6 light years in scientific notation.