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OpenStudy (anonymous):

(6.4 x 10^7) ÷ (1.6 x 10^3)

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OpenStudy (anonymous):

(6.4 x 10^7) 6.4 ----------- = ---- x 10^7-3 = 4 x 10^4 or 40,000 (1.6 x 10^3) 1.6

OpenStudy (anonymous):

i dont get how we cn know n=how to either add or subtract.

OpenStudy (anonymous):

when it is of the form a^m * a^n then u add to get a ^m+n a^m when it is of the form ----- then u subtract to get a ^m-n a^n

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