Question

21 multiple choice 0.3 points calculate 4.9473 + 0.048 ÷ 4.778 and report to the correct number of significant figures. 4.96 0.048 1.045 4.957 4.9473 4.778 1.0455 clear my selection

Explanation:

Step1: Perform division first

$0.048\div4.778\approx0.010046$

Step2: Add the result to 4.9473

$4.9473 + 0.010046=4.957346$

Step3: Round to correct significant - figures

The number 4.9473 has four decimal - place precision and 0.048 has two significant figures. When adding, we consider the decimal - place precision of the numbers. The result should be rounded to four decimal places. $4.957346\approx4.957$

Answer:

4.957