Question

the length of an object is measured as 85.7 centimeters. what is this measurement in scientific notation?
oa. 8.57×10^1 centimeters
ob. 8.570×10^2 centimeters
oc. 857×10^1 centimeters
od. 0.857×10^2 centimeters

Explanation:

Step1: Recall scientific - notation form

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

Step2: Convert 85.7 to scientific notation

To convert 85.7 to scientific notation, move the decimal point one place to the left to get $a = 8.57$. Since we moved the decimal point one place to the left, $n=1$. So, $85.7=8.57\times 10^{1}$.

Answer:

A. $8.57\times 10^{1}$ centimeters