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royalbugg
19.10.2020 •
Mathematics
The swimming pool is open when the high temperature is higher than 20°C. Laney tried to swim on Monday and Thursday the pool was open on Monday but it was closed on Thursday the high temperature it was 30°C on Monday but decreased at a constant rate in the next three days. What is an any quality to determine the rate of temperature decrease in degrees Celsius per day from monday to thursday
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Ответ:
30 - 3t ≤ 20
Step-by-step explanation:
Given that :
Pool is open when high temperature is higher than 20°C
From 30°C ; temperature decreased at a constant rate in the next three days ; that is the daily fall in temperature for 3 days is the same.
Let the fall or decrease in temperature = t
Constant decrease for 3 days = 3t
Change in temperature over 3 days :
Initial temperature - constant decrease
30°C - 3t
Hence, inequality to determine rate of temperature decrease :
30 - 3t ≤ 20
Ответ:
90°
Step-by-step explanation: