Question

Red blood cells are usually about 8 x 10^(-6)
meter in diameter. What is that number written in standard notation?

A.
–0.0000008

B.
0.0000008

C.
0.000008

D.
–0.000008

Answer 1

The diameter of red blood cells is given as \(8 \times 10^{-6}\) meters. To convert that to standard notation, you move the decimal point 6 places to the left.

Starting with 8.0:

1. Move the decimal left 1 place: 0.8
2. Move it left 2 places: 0.08
3. Move it left 3 places: 0.008
4. Move it left 4 places: 0.0008
5. Move it left 5 places: 0.00008
6. Move it left 6 places: 0.000008

Thus, \(8 \times 10^{-6}\) in standard notation is \(0.000008\).

The correct answer is:

C. \(0.000008\)