Which term of the ap 20 17 14 is the first negative term?
Answers
Answered by
2
Answer:
8th term
Step-by-step explanation:
an > a + (n - 1) d
0 > 20 + (n - 1) -3
0 > 20 - 3n + 3
0 > 23 - 3n
- 23 > -3n
-23/-3 > n
7.66 > n
therefore the first negative term is 8th term
a8 = 20 + (8 - 1)-3
= 20 + (7 × -3)
= 20 - 21
= -1
8th term is -1
Answered by
1
Answer:
The 8th term
Step-by-step explanation:
an > a + (n - 1) d
0 > 20 + (n - 1) -3
0 > 20 - 3n + 3
0 > 23 - 3n
- 23 > -3n
-23/-3 > n
therefore the first negative term is 8th term
a8 = 20 + (8 - 1)-3
= 20 + (7 × -3)
= 20 - 21
= -1
8th term is -1
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