Answer:
Explanation:
To solve the expression (7.2×10^(-1))×(4×10^(-7)), you can multiply the numerical values and combine the exponents.
First, multiply the numerical values:
7.2 × 4 = 28.8
Next, add the exponents of 10:
10^(-1) × 10^(-7) = 10^(-1-7) = 10^(-8)
Putting it all together, the expression simplifies to:
28.8 × 10^(-8)
This is the final answer in scientific notation.