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Toshi and owen need to add 4.9 x 10^9 and 4.1 x 10^7. toshi says they must use the expression (490 x 10^7 ) (4.1 x 10^7), but owen says they must use the expression (4.9 x 10^9) (0.041 x 10^9). are neither, one, or both students correct? explain

Answer :

wizard123
Both are correct. You add any two numbers in scientific notation if the exponents on the 10 are equal.

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