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.

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:

false

step-by-step explanation:

the reason i say this is because for a certain length of sides you can pick any two and the length is wither equal or greater than the third side and in this case it's not.

3 + 5 = 8

8 is smaller than 9 which is the third side.

hope this : )

3

step-by-step explanation: