One significant figure and one conversion problem

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1) How many significant figures are there in the answer to the following problem? (8.881*.02100) + .590? 2) A parsec is 206,265 times the distance from earth to the sun. If the distance is 8.000 million miles, express the distance of a parsec in miles in scientific notation.

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(1). When multiplying and dividing, you always take the smallest number of significant figures (in this case it is four). When ...

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