Given:
The sum of,
[tex]5.4+4.21=?[/tex]To find:
The answer to the appropriate number of significant figures
Explanation:
The sum of the numbers is,
[tex]\begin{gathered} 5.4+4.21 \\ =9.61 \end{gathered}[/tex]The answer should be in the smallest number of significant figures present in the question.
Here, the smallest number of significant figures is,
[tex]2\text{ \lparen for 5.4\rparen}[/tex]the other number has 3 significant figures
Hence, the answer is,
[tex]9.6[/tex]