Question

Multistep: At 7 p.M. Last night, the temperature was 10 degrees Fahrenheit. At 7 a.M. The next morning, the temperature was -2 degrees Fahrenheit. a. By how much did it change from 7 p.M. To 7 a.M.? b. The temperature changed by a steady amount overnight. By much did it change each hour?Immersive Reader

Answer 1

Answer:

The temperature changed by $-12^\circ F$ overnight.

The temperature changed by $-1^\circ F$ overnight each hour.

Step-by-step explanation:

Given that:

Temperature at 7 PM last night = $10^\circ F$

Temperature at 7 AM the next morning = $-2^\circ F$

a. The change in temperature from 7 PM to 8 AM = Temperature at 7 AM - Temperature at 7 PM

$\Rightarrow -2-10 =\bold{-12^\circ F}$

Negative sign indicates that the temperature has decreased.

b. Change in temperature each hour:

Divide the Change in temperature with the number of hours.

$\Rightarrow \dfrac{-12}{12} = \bold{-1^\circ F}$

Negative sign indicates that the temperature has decreased.