the fifth term of an arithmetic sequence is 17,and the 30th term is 142. find d and a1. A) d=5anda1=-3. B) d=4anda1=-5 C)d=3anda1=-5. D)d=2and a1=-6
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the fifth term of an arithmetic sequence is 17,and the 30th term is 142. find d and a1. A) d=5anda1=-3. B) d=4anda1=-5 C)d=3anda1=-5.
Answer:
A is the right answer
D=5
a1=-3