What is the first term of the arithmetic sequence?.
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Answer:
-66
Step-by-step explanation:
- 13, ____, -119
first, find the common difference:
-13 - (-119) = 106
next, divide 106 by 2: = 53
so, the common difference is 53.
now, subtract 53 from -13:
-13 - 53 = -66