A60-watt light bulb uses 60 watt hours of electricity in 1 hour. suppose everyone in the united states lef one unneeded 60 watt light bulb on for one hour everyday for a year.

electricity is billed in kilowatt hours. so 60 watt hours is equal to sixty divided by one thousand. express the electricity used by a 60 watt light bulb in one hour in kilowatt hours in scientific notation.

kilowatt-hours.

Step-by-step explanation:

If a 60-watt light bulb is used every day for one year, then this will consume (365 × 60) = 21900 watt-hours of electricity.

{Because one complete year consists of 365 days}

This 21900 watt-hour is equivalent to kilowatt-hours.

Therefore, in scientific notation the electricity consumed by each bulb in kilowatt-hour is . (Answer)

answer: x=3 and y=4

step-by-step explanation: