Question

Sally lives in Antarctica. In the afternoon, she measures the temperature to be -4°C. Eight hours later, she measures the temperature to be -18°C. Three hours later, she measures again and finds it to be -23°C. The following morning she measures one last time and finds the temperature to be 2°C. What is the absolute value of the difference between the lowest and highest measured temperatures?

a) 21°C

b) 25°C

c) 20°C

d) 19°C

Answer 1

The absolute value of the difference between the lowest (-23°C) and highest (2°C) temperatures measured by Sally in Antarctica is 25°C.

Step-by-step explanation:

The question asks us to find the absolute value of the difference between the lowest and highest measured temperatures that Sally recorded in Antarctica.

• First measurement: -4°C
• Second measurement, 8 hours later: -18°C
• Third measurement, 3 hours after the second: -23°C (this is the lowest temperature Sally recorded)
• Final measurement, the following morning: 2°C (this is the highest temperature Sally recorded)

To find the absolute difference between -23°C and 2°C, we subtract the lower temperature from the higher temperature and take the absolute value:

Absolute Difference = |2°C - (-23°C)| = |2°C + 23°C| = 25°C.

Therefore, the answer is b) 25°C, which is the absolute value of the difference between the lowest and highest measured temperatures.