Multiply (1.2 * 10^28) * (3 * 10^-19) Express the answer in scientific notation.

Answer 1

To multiply \( (1.2 \times 10^{28}) \times (3 \times 10^{-19}) \), you can separate the numerical coefficients and the powers of ten:

1. Multiply the numerical coefficients: \[ 1.2 \times 3 = 3.6 \]

2. Multiply the powers of ten: \[ 10^{28} \times 10^{-19} = 10^{28 + (-19)} = 10^{28 - 19} = 10^{9} \]

3. Combine the results: \[ 3.6 \times 10^{9} \]

The final answer in scientific notation is: \[ \boxed{3.6 \times 10^9} \]