Verified Answer :

it's going to be a negative exponent, since the number is less that 1.
move the decimal to where 986 is more than one but less that 10.
9.86X10^-7

TSO

\(0.000000986 = 986 \times 10^{-9}=\boxed{ 9.86 \times 10^{-7}}\)

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