Answer: The answer is A. -21
Its simplified and i just multiplied 3 by -7 :)
Answer:
Step-by-step explanation:
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Answer: 20.52
Step-by-step explanation:
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Step 1:
Convert the electricity per hour in kilowatts,
Electricity per hour = 20 watts
=20/1000 kilo,watts
Step 2:
The electricity consumes in 5 hour is ,
Electricity in 5 hour = 5x 20/1000 kilo watts.
Obtain the cost as,
=5x20/1000x10
=1 Cent
Answer: =1 Cent
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<em><u>Hope this helps.</u></em>