Evaluate (8 × 10^-3) ÷ (2 × 10^4).
A4 × 10^1
B4 × 10^-7
C4 × 10^-1
D4 × 10^7
Answer & Solution
Correct answer: B. 4 × 10^-7
The coefficients divide to 4 and the exponent difference is negative 3 minus 4, or negative 7.
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