Answer :
Answer:
The temperature changed by [tex]-12^\circ F[/tex] overnight.
The temperature changed by [tex]-1^\circ F[/tex] overnight each hour.
Step-by-step explanation:
Given that:
Temperature at 7 PM last night = [tex]10^\circ F[/tex]
Temperature at 7 AM the next morning = [tex]-2^\circ F[/tex]
a. The change in temperature from 7 PM to 8 AM = Temperature at 7 AM - Temperature at 7 PM
[tex]\Rightarrow -2-10 =\bold{-12^\circ F}[/tex]
Negative sign indicates that the temperature has decreased.
b. Change in temperature each hour:
Divide the Change in temperature with the number of hours.
[tex]\Rightarrow \dfrac{-12}{12} = \bold{-1^\circ F}[/tex]
Negative sign indicates that the temperature has decreased.