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The question is
Astronomers measure large distances in light-years. One light-year is the distance that light can travel in one year, or approximately 5.88 * 10^12 miles. Suppose a star is 1.23 * 10^2 light-years from Earth. In scientific notation, approximately how many miles is it?
Ok so what I did is I took the number of miles and put it into standard notation and got 58,800,000,000 miles. Then I took the number of number of light years the star is away from earth and put it into scientific notation and got 123 light years
Stacey Warren - Expert brainly.com
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Then I multiplied them together and got 7,232,400,000,000 then I rounded it and put it into scientific notation and got 7.23 * 10^12
So is that all right? If not please tell me what I messed up and what I need to do