At 4:00 Joe's thermoter read 30C. He put it in the freezer and read it every 5 minutes. At 4:05pm, the temperature was 23C. At4:10pm the temperature was 16C.The pattern continues, when will the temperature be below 0C?
It's dropping 7 degrees in 5 minutes. How many minutes will it take to get below 0? What time will that be?
If you post your answer, we'll be glad to check it.
Make a table.
time ..... T
4:00........ 30
4.05........ 23
4:10........ 16
4:15........ 09
continue in this fashion until the T is below zero.
To answer this question, we need to identify the pattern in the temperature readings and use it to determine when the temperature will be below 0 degrees Celsius.
From the given information, we can observe that the temperature decreases by 7 degrees Celsius every 5 minutes. We can use this pattern to determine the time when the temperature will be below 0 degrees Celsius.
First, we need to calculate the number of 5-minute intervals it takes for the temperature to decrease by 7 degrees Celsius. Since the temperature decreases by 7 degrees every 5 minutes, we can divide the initial temperature of 30 degrees Celsius by 7 to find out how many intervals are needed.
30 degrees Celsius / 7 degrees per interval = 4.2857 intervals
Since we can't have a fraction of an interval, we round up to the nearest whole number, which is 5 intervals.
Next, we multiply the number of intervals (5) by 5 minutes to determine the time it takes for the temperature to decrease by 35 degrees Celsius (7 degrees per interval * 5 intervals).
5 intervals * 5 minutes per interval = 25 minutes
Therefore, it will take 25 minutes for the temperature to decrease by 35 degrees Celsius. Given that the initial temperature was 30 degrees Celsius, the temperature will be below 0 degrees Celsius at:
4:00 pm + 25 minutes = 4:25 pm
Therefore, the temperature will be below 0 degrees Celsius at 4:25 pm.