Respuesta :
Answer:
The expression to find how many hours earlier Sanya had first checked the thermometer is: [tex]\frac{21}{1.4}[/tex].
Step-by-step explanation:
The rate at which the temperature was falling is, 1.4 degrees per hour.
Sanya checked the temperature at 6:00 AM and found out that the temperature had fallen 21 degrees.
Compute the number of hours it took for the temperature to fall to 21 degrees as follows:
[tex]\text{Number of hours}=\frac{\text{Final Temperature}}{\text{Rate of decrease}}[/tex]
[tex]=\frac{21}{1.4}\\\\=15[/tex]
It took 15 hours for the temperature to fall to 21 degrees.
Then 15 hours before 6:00 AM is, 3:00 PM.
Thus, the expression to find how many hours earlier Sanya had first checked the thermometer is: [tex]\frac{21}{1.4}[/tex].
Answer:
-21 divided by -1.4
Step-by-step explanation:
I took the test and I checked my answers. It said that "A" or -21 divided by -1.4 was the correct answer
