What is the correct simplification of 5.4x 10^12/ 1.2x 10^3 written in scientific notation?

My answer is 4.5 x 10^9

To simplify the given expression using scientific notation, you need to divide the coefficients and subtract the exponents.

Step 1: Divide the coefficients:
5.4 / 1.2 = 4.5

Step 2: Subtract the exponents:
10^12 / 10^3 = 10^(12-3) = 10^9

Step 3: Combine the coefficient and exponent in scientific notation:
The simplified expression is 4.5 x 10^9.