Degree days are the difference between the daily temperature mean, (high temperature plus low temperature divided by two) and 65°F. 65°F because we assume that at this temperature we do not need cooling or heating.
In our case the daily mean temperature is 83°F and X is the number of cooling-degree days.
X=83-65
X=18
Answer:
A
Step-by-step explanation:
A) r = 8
B) r = 4
C) r = 
~ 3.09
D) r = 
Circle A has the largest radius, and thus is the largest circle
Answer is b for sure I am just trying to get point not right answer decrees
Perpendicular because y=1 goes across and x=1 goes vertical forming a right angle
Substitute the values of A = 3 and B = -4 to the expression:
