Question

Which expression is equal to 1/8000 written in scientific notation?
A. 8.0 x 10^3
B. 1.25 x 10^-10
C. 125 x 10^-5
D. 1.25 x 10^4

Answer 1

It's definitely D

1/8000 = .000125
1.25 x 10^-4 = .000125

Therefore,

1/8000 = 1.25 x 10^-4

Answer 2

all are not correct, you might forget to add - to the option D.