Question

question 18 (1 point) listen how many significant figures does the sum 8.5201 + 1.93 contain? a) 1 b) 2 c) 3 d) 4 e) 5 question 19 (1 point) listen convert 0.83 centimeters to inches, given 1 in = 2.54 cm. 0.327 inches 0.33 inches 2.1 inches 2.11 inches

Explanation:

Question 18

Step1: Calculate the sum

$8.5201 + 1.93 = 10.4501$

Step2: Round to least decimal places

The number 1.93 has 2 decimal places, so we round the sum to 2 decimal places: $10.45$

Step3: Count significant figures

Count non-zero and trapped zeros: 1,0,4,5 → 4 total.

Question 19

Step1: Set up conversion formula

Use $\text{inches} = \frac{\text{centimeters}}{2.54}$

Step2: Substitute value and calculate

$\text{inches} = \frac{0.83}{2.54} \approx 0.32677$

Step3: Round to 2 significant figures

0.83 has 2 significant figures, so round to 0.33.

Answer:

Question 18: d) 4
Question 19: 0.33 inches