Question

What is 5.5×104
multiplied by 2.2×10−8
? Write the answer in scientific notation.(1 point)
Responses

1.21×10−3

1.21 times 10 negative cubed

12.1×10−4

12.1 times 10 superscript negative 4 baseline

1.21×10−5

1.21 times 10 superscript negative 5 baseline

1.21×10−4

1.21 times 10 superscript negative 4 baseline

Answer 1

(5.5 × 10^4)(2.2 × 10^−8) = (5.5·2.2) × 10^(4−8) = 12.1 × 10^−4 = 1.21 × 10^−3.

Answer: 1.21 × 10^−3.