Question

The use of electricity in the US in 1902 was 6.03 x 10^9 kilowatt-hours.

The use of electricity in the US in 1950 was 4.3 x 10^11 kilowatt-hours.

How many times more was the electricity used in 1950 than 1902? Express your answer in Scientific Notation.

(2 points)
Responses

Divide coefficients and subtract powers: 1.4 x 10^2

Add coefficients and add powers: 10.33×10^20

Multiply coefficients and add powers: 2.6×10^21

Subtract coefficients and divide powers: 1.73×10^2

Divide coefficients and subtract powers: 7.13×10^1

Choose 1 answer

Answer 1

Multiply coefficients and add powers: 2.6×10^21

Therefore, the electricity used in 1950 was 2.6 x 10^21 times more than in 1902.