Question

write the standard number 722,300 in scientific notation.
oa. 72.23×10^5
ob. 7.223×10^ - 5
oc. 7.223×10^5
od. 7.223×10^4

Explanation:

Step1: Recall scientific - notation form

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

Step2: Move the decimal point

For the number 722300, move the decimal point 5 places to the left to get $a = 7.223$. Since we moved the decimal point 5 places to the left, $n = 5$. So, $722300=7.223\times 10^{5}$.

Answer:

C. $7.223\times 10^{5}$