Which of the following prefixes would be best to use when measuring your own mass? need . milli centi deci kilo

For one history test, keith had to answer 40 questions. of these 40 questions, keith answered 28 of them correctly. what percent did keith get on his history test? round your answer to the nearest tenth if necessary

You are measuring the dimensions of the floor in your bedroom because you are planning to buy new carpet. which unit of measure is the most appropriate to use in this situation?

Ineed ! the person who answers and shows their work on they got the answer first will be marked the !