Final answer:
The value of the expression (3 x 10^-8) (3 x 10^5) in scientific notation is 9 x 10^-3.
Step-by-step explanation:
To find the value of the expression (3 x 10^-8) (3 x 10^5) in scientific notation, we can follow the rules of multiplication for exponential expressions. When multiplying two powers of 10, we add the exponents. In this case, we have:
- 3 (a coefficient) times 3 (another coefficient) equals 9.
- 10^-8 (a power of ten) times 10^5 (another power of ten) equals 10^(-8+5) or 10^-3.
Combining these results, we get the expression in scientific notation as 9 x 10^-3.