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20-01-2016
Mathematics

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What's the product of 21 and (6.3 times 10-4)

Respuesta :

20-01-2016

21(6.3 x 10 - 4). Remember PEMDAS. Everything done in parenthesis is done first.

Within the parenthesis, there is multiplication and subtraction. In PEMDAS, multiplication/division comes before addition/subtraction, so 6.3 x 10 = 63.
63 - 4 = 59
21(59) = 1,239.

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