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Standard form of (3 × 10^4)(4 × 10^-2)?

A1.2 × 10^3
B1.2 × 10^2
C1.2 × 10^-3
D1.2 × 10^6
Answer & Solution
Correct answer: A. 1.2 × 10^3
Multiplying gives 12 times 10 squared, which normalizes to 1.2 times 10 cubed.
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