Question

Solve the problems. Express your answers to the correct number of significant figures. 2.31/0.790

Answer 1

Answer:

      $\dfrac{2.31}{0.790}=2.92$

Explanation:

When you divide two measures, the rule for the number of significant figures of the quotient is to keep the number of significant figures of the measure with least significant figures.

• 2.31 has three significant figures

• 0.790 has three significant figures

Then, the asnwer must have three significant figures:

            $\dfrac{2.31}{0.790}\approx 2.92405\approx2.92$

Since the figure after 2.92 is less than five, you just drop it.