What's the common difference of the sequence 0, 5, 10, 15, 20, . . ? a. d = –5 b. d = 3 c. d = –2 d. d = 5

Common difference of a sequence is difference between any two consecutive terms in the sequence.

So let's pick up any two consecutive terms,

0 and 5,

difference between 0 and 5 is 5-0 = 5

so common difference is 5

t= half of the arc subtended by t.

r= half of the arc subtended by r.  

t+r= half of the arc subtended by t + half of the arc subtended by r= half of 360=180

step-by-step explanation:

yes, i think so although i am not sure. this is a very strange question.