Chords AB and BD intersect in circle O as shown in the diagram. Two of the angle measurements are marked. What is mCED? A. 24 degrees
B. 65 degrees
C. 72 degrees
D. 130 degrees

48+82)/2 = 65  

Answer C

Step-by-step explanation:

48+82)/2 = 65

(I just had this exact same question so I saw the picture)

whole numbers.

step-by-step explanation:

we are given the average monthly rainfall (in millimeters) model r(m) for the years 1900-2009 as a function of the month number m.

as we can see m is taken for the number of months for years 1900-2009.

we know that number of months can't be a negative number or decimal number or a fraction.

so, the number of months could be only positive whole numbers.

therefore, whole numbers is more appropriate for the domain of r.