Question

the number 0.00000620 written in scientific notation would be answer: a 6.20×10⁻⁵ b 6.20×10⁵ c 6.20×10⁻⁶ d 6.20×10⁶

Explanation:

Step1: Recall scientific - notation form

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

Step2: Move the decimal point

For the number $0.00000620$, move the decimal point 6 places to the right to get a number between 1 and 10. The new number is $a = 6.20$.

Step3: Determine the exponent

Since we moved the decimal point 6 places to the right, the exponent $n=-6$. So, $0.00000620 = 6.20\times10^{-6}$.

Answer:

C. $6.20\times 10^{-6}$