Question

Which number is not in scientific notation? 9 x 10^19 7.8 x 10^6 1.45 x 10^-7 0.33 x 10^-15

Answer 1

Answer:

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Step-by-step explanation:

Answer 2

1.45 x 10^-7 isn't in scientific notation because if it's negative, the decimal starts before the first real number, right?