Question

choose the correct scientific notation for the given number. the diameter of a red blood cell is about 0.007 of a millimeter. 0.7×10^(-2) 7.0×10^(3) 7.0×10^(-3) 70×10^(-2)

Explanation:

Step1: Recall scientific - notation form

Scientific notation is $a\times10^{n}$, where $1\leq|a|\lt10$ and $n$ is an integer.

Step2: Convert 0.007 to scientific notation

Move the decimal point 3 places to the right to get a number between 1 and 10. So, $0.007 = 7.0\times10^{-3}$.

Answer:

$7.0\times 10^{-3}$ (corresponding to the option $7.0\times10^{-3}$)