which expression is equal to 1/8000 written in scientific notation?

8.0 times 10^3
1.25 times 10^-4
125 times 10^-5
1.25 times 10^4

The expression equal to 1/8000 in scientific notation is 1.25 times 10^-4.

To write the expression 1/8000 in scientific notation, we need to move the decimal point to the right until there is only one non-zero digit to the left of the decimal point.

1/8000 can be written as 1.25 times 10^-4 in scientific notation.