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For a scientific experiment, a physicist must make sure that the temperature of a metal does not get colder than −80 °C. The physicist changes the metal's temperature at a steady rate of −4 °C per hour.
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For a scientific experiment, a physicist must make sure that the temperature of a metal does not get colder than −80 °C. The physicist changes the metal's temperature at a steady rate of −4 °C per hour. Let t represent temperature in degrees Celsius.

User Andrew Wong
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11 votes

Answer:

We conclude that the physicists can change the temperature 20

. Step-by-step explanation: We know that a physicist must make sure that the temperature of metal at 0° C gets no colder than -80° C. The physicist changes the metal's temperature at a steady rate of -4° C per hour. We calculate how long can the physicists change the temperature. We get:

User Dan McGrath
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