Question

2. Javier used a microscope to measure the diameter

of a grain of sand. He found that the diameter of the
grain of sand was 0.00007 centimeters. How is this
number written in scientific notation?
A. 7x 104
C. 7 x 10-6
B. 7 x 105
D. Not Here

Answer 1

B. 7 x
`10^5` or not here

Explanation:

if B. is
`10^5` then it is B. if it is 105 then it is not here

Hope this helped!!