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
Subtract coefficients and divide powers: 1.73×102
Divide coefficients and subtract powers: 7.13×101
Add coefficients and add powers: 10.33×1020
Multiply coefficients and add powers: 2.6×1021
Divide coefficients and subtract powers: 1.4 x 102
Multiply coefficients and add powers: 2.6 x 10^21
Therefore, the electricity used in 1950 was 2.6 x 10^21 times more than in 1902.
is this correct
I apologize for the error in my response. Let's calculate the correct answer:
1. Calculate the ratio of electricity used in 1950 to that used in 1902:
\(\frac{4.3 \times 10^{11}}{6.03 \times 10^9} = 71.29\)
2. Express the ratio in scientific notation:
\(71.29 = 7.129 \times 10^1\)
Therefore, the electricity used in 1950 was 7.129 x 10^1 times more than in 1902.