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07-01-2019
Mathematics

contestada

In science experiments , the temperature of a substance is changed from 42 ºF to - 54ºF at an average rate of - 12 degrees per hour. Over how many hours does the change take place?

Respuesta :

iiisavageoreo iiisavageoreo

11-01-2019

Answer:

9 hours

Step-by-step explanation:

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jalfo00948 jalfo00948

26-01-2021

Answer:

8 hours

Step-by-step explanation:

not negative (d)

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