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Can someone help me with this problem please.
Tim's electricity costs 4.3 ¢ a kilowatt hour. How much will it cost to run the following appliances for 10 hours? (round to the nearest cent)
a) a Dryer @ 4,000 watts. Cost = $ ___
b) a Heater @ 1,500 watts. Cost = $ __
c) a Radio @ 40 watts. Cost = $ _____
 one year ago
 one year ago
Can someone help me with this problem please. Tim's electricity costs 4.3 ¢ a kilowatt hour. How much will it cost to run the following appliances for 10 hours? (round to the nearest cent) a) a Dryer @ 4,000 watts. Cost = $ ___ b) a Heater @ 1,500 watts. Cost = $ __ c) a Radio @ 40 watts. Cost = $ _____
 one year ago
 one year ago

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zeppBest ResponseYou've already chosen the best response.3
1 kilowatt is equal to 1000 watts, can you convert the questions into kW?
 one year ago

Claire4christBest ResponseYou've already chosen the best response.0
so we got 4,000 watts
 one year ago

Claire4christBest ResponseYou've already chosen the best response.0
and we have to convert them into kw right
 one year ago

Claire4christBest ResponseYou've already chosen the best response.0
0,004 killowatts
 one year ago

zeppBest ResponseYou've already chosen the best response.3
You are doing this wrong D:\[1\text{kW}=1000\text{W}\\?\text{kW}=4000\text{W}\]
 one year ago

zeppBest ResponseYou've already chosen the best response.3
Yes! Now, this appliance is rated at 4kW, using it for an hour would use 4kWh, how much would it use if it was operating for 10 hours?
 one year ago

zeppBest ResponseYou've already chosen the best response.3
40kWh, yes, Tim should pay 4.3 cents per kWh, so how much does he have to pay?
 one year ago

zeppBest ResponseYou've already chosen the best response.3
Yep, Tim has to pay 172 cents for running that appliance for 10 hours, you got it! :D
 one year ago

zeppBest ResponseYou've already chosen the best response.3
You have to convert it to $'s though, so 172 cents would be $1.72
 one year ago

Claire4christBest ResponseYou've already chosen the best response.0
so its asking round to the nearest cent. 1.7
 one year ago

ChlorophyllBest ResponseYou've already chosen the best response.0
Round to the nearest CENTs means 2 decimal digits = $1.72
 one year ago

Claire4christBest ResponseYou've already chosen the best response.0
1 kilowatt=1,000 watts 1,500/1,000=1.5 1.5x10=15 15x4.3=64.5
 one year ago

Claire4christBest ResponseYou've already chosen the best response.0
he pays 64.50 right
 one year ago

ChlorophyllBest ResponseYou've already chosen the best response.0
= 40 w * (4.3 / 1, 000 w hr) * 10 hrs
 one year ago
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