Mathematics, 07.10.2019 19:00 kristieL50
Elissa's parents are always telling her to turn off the lights when she leaves a room. a light bulb requires 75 watts to run when it is turned on. the fixture in elissa's room requires four of these bulbs. elissa's parents estimate that she leaves the lights on unnecessarily for 2.5 hours per day. how many watt-hours of electricity are used by these bulbs during 2.5 hours?
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Elissa's parents are always telling her to turn off the lights when she leaves a room. a light bulb...
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