Algebra problem #20721

Algebra Level 1

Which of the following is how 123.45123.45 is written in scientific notation?

A) 1.2345 1.2345
B) 1.2345×102 1.2345 \times 10^2
C) 123.45 123.45
D) 12345 12345
E) 12345×102 12345 \times 10^{-2}

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