Question

question 1 1 pts how many significant figures are in 1.260 question 2 1 pts perform the following calculation, and round your answer to the correct number of significant figures: 30 ÷ 3.4

Explanation:

Step1: Identify significant - figure rules

Non - zero digits and zeros between non - zero digits are significant. Trailing zeros in a number with a decimal point are significant. In 1.260, 1, 2, 6, and 0 are all significant.

Step2: Count significant figures

There are 4 significant figures.

Step3: Calculate 30÷3.4

$30\div3.4=\frac{30}{3.4}\approx8.8235$

Step4: Determine significant figures for division

For division, the result should have the same number of significant figures as the number with the fewest significant figures in the values used in the calculation. 30 has 2 significant figures and 3.4 has 2 significant figures. So the result should be rounded to 2 significant figures.

Step5: Round the result

Rounding 8.8235 to 2 significant figures gives 8.8.

Answer:

Question 1: 4
Question 2: 8.8