The temperature fell 10.5°f over a period of 5 hours. what was the average change in temperature per hour?

2.1 would be the average rate of change per hour.

Step-by-step explanation:

If the temperature fell 10.5 degrees Fahrenheit over a period of 5 hours then 10.5°F divided by 5 hours equals 2.1 degrees per hour.

I hope this helps!

step-by-step explanation:

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer