Express 2,750,389 in scientific notation

I think it is 2.750389 x 10 6

You are correct.

2.560*330

2.56030x105

What is the scientific notation of 125 million dollars?

To express a number in scientific notation, we need to represent it in the form of a x 10^b, where a is a number between 1 and 10 (inclusive) and b is an integer representing the power of 10.

To express 2,750,389 in scientific notation:
1. Count the number of decimal places until you reach the first non-zero digit. In this case, the first non-zero digit is 2 in the millions place, so there are six decimal places.
2. Rewrite the number by moving the decimal point six places to the left. We get 27.50389.
3. Now, express this number as a single digit (a) multiplied by a power of 10 (b). In this case, a = 2.750389 and b = 6. Therefore, the scientific notation of 2,750,389 is 2.750389 x 10^6.