I. –3, 1, 5, 9, ...
II. 1, 2, 4, 8, ...
III. 4, -12, 36, -108, ...
IV. 7, 14, 21, 28, ..
Which of these are arithmetic sequences?
A. I and III
B. I and IV
OC. ,II, and IV
OD. IV only

  B.  I and IV

Step-by-step explanation:

The first differences of the terms shown are ...

  I. 4, 4, 4 . . . . a common difference of 4

  II. 1, 2, 4 . . . no common difference

  III. -16, 48, -144 . . . no common difference

  IV. 7, 7, 7 . . . . a common difference of 7

An arithmetic sequence is characterized by a common difference between terms. Only I and IV have a common difference between terms.

Only I and IV are arithmetic sequences.

answer: h=5.6 i don't really know how to put into words, so i though i would let you do that. i hope i was able to some

step-by-step explanation:

18 = 6(h)+1/2

18 = 6h+1/2

18-1 = 6h/2

17 = 3h

17/3 = h

h = 5.6

- click here to get an answer to your question ✍ 75 i will mark one of the angles formed by two

step-by-step explanation: