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Claire4christ
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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 = $ _____
 2 years ago
 2 years ago
Claire4christ Group Title
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 = $ _____
 2 years ago
 2 years ago

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Claire4christ Group TitleBest ResponseYou've already chosen the best response.0
@Chlorophyll
 2 years ago

Claire4christ Group TitleBest ResponseYou've already chosen the best response.0
@zepp
 2 years ago

zepp Group TitleBest ResponseYou've already chosen the best response.3
1 kilowatt is equal to 1000 watts, can you convert the questions into kW?
 2 years ago

Claire4christ Group TitleBest ResponseYou've already chosen the best response.0
so we got 4,000 watts
 2 years ago

Claire4christ Group TitleBest ResponseYou've already chosen the best response.0
and we have to convert them into kw right
 2 years ago

Claire4christ Group TitleBest ResponseYou've already chosen the best response.0
4,000x1,000
 2 years ago

Claire4christ Group TitleBest ResponseYou've already chosen the best response.0
0,004 killowatts
 2 years ago

zepp Group TitleBest ResponseYou've already chosen the best response.3
You are doing this wrong D:\[1\text{kW}=1000\text{W}\\?\text{kW}=4000\text{W}\]
 2 years ago

Claire4christ Group TitleBest ResponseYou've already chosen the best response.0
killowatt
 2 years ago

zepp Group TitleBest 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?
 2 years ago

zepp Group TitleBest 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?
 2 years ago

Claire4christ Group TitleBest ResponseYou've already chosen the best response.0
40x4.3
 2 years ago

zepp Group TitleBest 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
 2 years ago

zepp Group TitleBest ResponseYou've already chosen the best response.3
You have to convert it to $'s though, so 172 cents would be $1.72
 2 years ago

Claire4christ Group TitleBest ResponseYou've already chosen the best response.0
so its asking round to the nearest cent. 1.7
 2 years ago

zepp Group TitleBest ResponseYou've already chosen the best response.3
Yes, you got it :)
 2 years ago

Chlorophyll Group TitleBest ResponseYou've already chosen the best response.0
Round to the nearest CENTs means 2 decimal digits = $1.72
 2 years ago

Claire4christ Group TitleBest 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
 2 years ago

Claire4christ Group TitleBest ResponseYou've already chosen the best response.0
he pays 64.50 right
 2 years ago

Chlorophyll Group TitleBest ResponseYou've already chosen the best response.0
Yes, $64.50
 2 years ago

Chlorophyll Group TitleBest ResponseYou've already chosen the best response.0
= 40 w * (4.3 / 1, 000 w hr) * 10 hrs
 2 years ago
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