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5 November, 23:24

Simplify the expression. astronomers measure large distances in light-years. one light-year is the distance that light can travel in one year, or approximately 5,880,000,000,000 miles. suppose a star is 13.4 light-years from earth. in scientific notation, how many miles away is it?

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  1. 5 November, 23:31
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    Just multiply how many miles in one light year (provided in question which is 1 LY = 5.88*10^12 miles) and multiply that by 13.4 and you should get 7.88*10^13 miles for the answer.
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