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11 March, 10:56

Multiply. (2.5*10-8) (9*10-10) express your answer in scientific notation.

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  1. 11 March, 13:27
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    (2.5 x 10^-8) (9 x 10^-10) = (2.5 x 9) x (10^ (-8 + (-10))) = 22.5 x 10^ (-8 - 10) = 2.25 x 10^1 x 10^-18 = 2.25 x 10^ (1 + (-18)) = 2.25 x 10^ (1 - 18) = 2.25 x 10^-17
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