Square Roots. A square root goes the other way: 3 squared is 9, so a square root of 9 is 3. A square root of a number is ... ... a value that can be multiplied by itself to give the original number. A square root of 9 is ...... 3, because when 3 is multiplied by itself we get 9.quare Roots. A square root goes the other way: 3 squared is 9, so a square root of 9 is 3. A square root of a number is ... ... a value that can be multiplied by itself to give the original number. A square root of 9 is ...
The chart at the left shows the average cost of electricity for 2014 by consumer group per the EIA (the US Energy Information Administration). For 2014 the average residential cost was 12.50 cents per kilo-watt hour up 3.1% from 2013. Commercial was 10.75 cents and industrial 7.01 cents.
When you use 1000 kilowatts for an hour, that's a kilowatt-hour (kWh). The average cost for electricity in the U.S. is 11 cents per kilowatt-hour. Assuming you pay 11 cents/kWh, then your cost is: 600 watts: 0.6 x $0.11 = $0.07 /hr. 900 watts: 0.9 x $0.11 = $0.10 /hr.1500 watts: 1.5 x $0.11 = $0.17/hr. It's probably more useful to figure the cost per month.he average cost for electricity in the U.S. is 11 cents per kilowatt-hour. Assuming you pay 11 cents/kWh, then your cost is: 600 watts: 0.6 x $0.11 = $0.07 /hr. 900 watts: 0.9 x $0.11 = $0.10 /hr.