3) (2,0 pontos) escreva em notação científica: a)314,58.10 elevado a 20 b) 314,58.10 elevado a -13 c) 0,00031458.10 elevado a 20 d)0,0031458.10 elevado a 20
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a)
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b)
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c)
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d)
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b)
c)
d)
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