Questions: Chapter 3 Homework Item 15 Part A Choose the temperature on the Celsius thermometer. 45.780°C 46.0°C 45.80°C 46°C

Transcript text: Chapter 3 Homework Item 15 Part A Choose the temperature on the Celsius thermometer. $45.780^{\circ} \mathrm{C}$ $46.0^{\circ} \mathrm{C}$ $45.80^{\circ} \mathrm{C}$ $46^{\circ} \mathrm{C}$

Solution

Solution Steps

Step 1: Analyze the thermometer reading

The thermometer shows a reading between 45 and 46 degrees Celsius. The red bar is slightly above the 45.8 mark.

Step 2: Determine the significant figures

The thermometer has markings for every 0.2 degrees Celsius. Thus, we can estimate to one decimal place. The reading appears to be just above 45.8.

Step 3: Choose the closest answer

The closest answer to our estimate is 45.8°C. However, we should express the temperature with one decimal place since we estimated to the tenths place. Therefore, we write 45.80°C.