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Simplify the expression. Write the answer using scientific notation.
Astronomers measure large distances in lightyears. One lightyear is the distance that light can travel in one year, or approximately 5,880,000,000,000 miles. Suppose a star is 15.8 lightyears from Earth. In scientific notation, how many miles away is it?
would this be 1.58 x 10^12 miles?
 one year ago
 one year ago
Simplify the expression. Write the answer using scientific notation. Astronomers measure large distances in lightyears. One lightyear is the distance that light can travel in one year, or approximately 5,880,000,000,000 miles. Suppose a star is 15.8 lightyears from Earth. In scientific notation, how many miles away is it? would this be 1.58 x 10^12 miles?
 one year ago
 one year ago

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sputnikBest ResponseYou've already chosen the best response.1
Step 1. Write 5,880,000,000,000 in scientific notation. That is 5.88 x 10 ^ 12 I think. Do you think so too?
 one year ago

sputnikBest ResponseYou've already chosen the best response.1
That's the distance it moves in one light year. To find out how many light years it moves in 15.8 years, you should multiply 5.88 x 10 ^2 x 15.8 = ??? Hope that helps.
 one year ago

sputnikBest ResponseYou've already chosen the best response.1
Oops, should have been: 5.88 x 10 ^ 12 x 15.8. I missed the one in the 10^12 by accident. Sorry.
 one year ago
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