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31 January, 12:38

In scientific notation. Choose the answer with the proper number of significant figures. (3x10^4) (4x10^23)

A. 12^27

B. 12 x 10^27

C. 10 x 10^27

D. 1 x 10^28

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  1. 31 January, 12:44
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    It would be choice B.

    This is because the 3 is distributed to the 4 to get 12. The 10^4 is distributed to the 10^23 and because of the exponent laws, the exponents are added to get 27 and the 10's (being the base) is left alone.
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