Contemporary Round
Contemporary Math Prob?
Use Scientific Notation to solve the problem.
How many liters of oil are needed to supply the electrical energy needs of an average U.S. home for 11 weeks? Assume that the energy released by burning one liter of oil is 1.2 x 10^7 joules and that the electrical energy used daily in an average U.S. home is 5 x 10^7 joules. Round your answer to the nearest tenth of a liter.
a) 45.8 liters
b)18.5 liters
c) 320.8 liters
d) 2.6 liters
The average home used 5 x10^7 J and one liter is 1.2 x10^7 J
5/1.2 = 4.1667 liters used per day in an average home
11 weeks x 7 days in a week = 77 days
77 x 4.1667 liters = 320.8 liters
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Midh,Contemporary Round,Super Dancer
