Which of the following correctly expresses the number below in scientific notation of 0.0000752?

Answer 1

In order to write a number in scientific form, you first need to divide it by a power of 10 such that the greatest place value is the units. In this case, you can divide by 0.00001 to get 7.52. The next step is to represent this power of 10 next to the number as a multiplication. In this case we used 0.00001, which is 10-5

Thus 0.0000752 in scientific notation is 7.52x10-5