DNA analysis is the process in which genetic sequences are studied. It is used by law enforcement and medical personnel to identify a particular person or species, and even specific cancers and diseases. At one point the analysis process was very limited.
To round off to the nearest tenth, means to keep one decimal digit. (To round off to the nearest hundredth would mean to keep two digits; to the nearest thousandth, three; and so on. Now, the digit in the second decimal place is 5. Therefore add 1 to the previous digit 2.
In order to round to the nearest tenth, we need to know where the tenths place is. Here is a visual look at place value: The tenths place is to the right of the decimal point. Our rounded answer will stop at the tenths place. We use the hundredths place to help us determine the value that needs to be in the tenths place. If the value in the hundredths place is 5 or above we give it a shove..