The use of electricity in the US in 1902 was 6.03 * 10 ^ 9 kilowatt-hours.
The use of electricity in the US in 1950 was 4.3 * 10 ^ 11 kilowatt-hours.
What was the total kilowatt-hours of electricity used during these two years?
(2 points)
(6.3 * 10 ^ 9)(4.3 * 10 ^ 11) = 25.929 * 10 ^ 2 = 2.6 * 10 ^ 1
( 6.3*10^ 9 )+ (4.3 * 10 ^ 11) = 10.33 * 10 ^ 20 = 1.033 * 10^19
6.3*10^ 9 )+ (4.3 * 10 ^ 11) = 0.063 * 10 ^ 11 + (4.3 * 10 ^ 11) = 4.363 × 10¹
○ ( 6.3*10^ 9 )* (4.3 * 10 ^ 11) = 25.929 * 10 ^ 20 = 2.6 * 10 ^ 19
1 answer
The total kilowatt-hours of electricity used during these two years was 2.6 * 10^19.