What is 5.5×10^4 multiplied by 2.2×10^-8 ? Write the answer in scientific notation.(1 point)

Question

Responses

1.21×10^-5

12.1×10^-4

1.21×10^-4

1.21×10^-3

Answer 1

To multiply numbers in scientific notation, you multiply their coefficients and add their exponents.

For this problem, we have:

(5.5 × 10^4) × (2.2 × 10^-8)

Multiplying the coefficients, we get:

5.5 × 2.2 = 12.1

Adding the exponents, we get:

10^4 × 10^-8 = 10^(4-8) = 10^-4

Therefore, the answer in scientific notation is:

1.21 × 10^-4