To convert \( 8.612 \times 10^{-8} \) to decimal notation, move the decimal point in the number \( 8.612 \) eight places to the left (because of the negative exponent):
- Starting with \( 8.612 \), moving the decimal left:
- Move 1 place: \( 0.8612 \)
- Move 2 places: \( 0.08612 \)
- Move 3 places: \( 0.008612 \)
- Move 4 places: \( 0.0008612 \)
- Move 5 places: \( 0.00008612 \)
- Move 6 places: \( 0.000008612 \)
- Move 7 places: \( 0.0000008612 \)
- Move 8 places: \( 0.00000008612 \)
So, \( 8.612 \times 10^{-8} \) in decimal notation is \( 0.00000008612 \).
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