Question

how do you write 0.00086 in scientific notation? 8.6 × 10⁻⁴ 8.6 × 10⁻³ 86 × 10⁻³ 0.86 × 10⁻⁴ submit

Explanation:

Step1: Define scientific notation rule

Scientific notation is $a \times 10^n$, where $1 \leq a < 10$, $n$ is integer.

Step2: Adjust decimal for 0.00086

Move decimal 4 places right: $a=8.6$, $n=-4$

Step3: Match with options

Result is $8.6 \times 10^{-4}$

Answer:

$8.6 \times 10^{-4}$