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Scientists discovered a large star 500,000 light-years from Earth. A light-year is about 5,880,000,000,000 miles. What is the distance of the large star from Earth in scientific notation?

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500,000 in scientific notation is 5 X 10^5
5,880,000,000,000 in scienctific notation is 5.88 X 10^12
(5 X 10^5) X ( 5.88 X 10^12) = 2.94 X 10^18
so your answer is 2.94 X 10^18