hinik78 hinik78

25-11-2020
Mathematics

contestada

Plz :<
In a science experiment, the temperature of a substance is changed from 42 degrees Fahrenheit to -54 degrees Fahrenheit at an average rate of -12 degrees per hour. Over how many hours does this change take place? *
10 points

A -8 hours
B. 1/8 hour
C. 1 hour
D. 8 hours

Respuesta :

max06merritt max06merritt

25-11-2020

Answer:

D 8 hours

Step-by-step explanation:

it has to be positive and it is obviously more than 1 hour so it has to be 8 hours by process of elimination.

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