Asked by kimie

In a science experiment, the temperature of a substance is changed from 42°F to -54°F at an average rate of -12 degrees per hour. Over how many hours does the change take place?
**Write as an expression and solve
THANK YOU!
Answered by Steve
(-54-42)° / (-12°/hr) = -84/-12 = 7 hr
Answered by Brianna Grant
42--54=
--=turn both into a positive
Add normal
42+54=94
Which is 7 hours
There are no AI answers yet. The ability to request AI answers is coming soon!