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Mathematics, 24.10.2021 14:00 blancademarco1994

Which is the best estimate for (6.3 x 10 to the power of -2)(9.9x 10 to the power of -3) written in scientific notation? A- 6x10 to the power of -4

B- 60x10 to the power of -5

C- 6x10 to the power of 7

D- 60x10 to the power of 6

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