Section: Mathematical Reasoning

48) Express 2,750,389 in scientific notation.

1. 27.50389 x 10⁵
   
2. 275.0389 x 10³
3. 27.50389 x 10⁶
4. 0.2750389 x 10⁷
5. 2.750389 x 10⁶

To express a number in scientific notation, express it as the product of a number between 1 and 10 and a power of 10. In this case, the number between 1 and 10 is 2.750389. In going from 2.750389 to 2,750,389, you move the decimal point 6 places to the right. Each move represents a multiplication by 10 and 6 moves represents a multiplication by 10⁶.