the first term of an a.p is -7 and common difference 5 .find its 18 th term and general term
Answers
Answered by
1
Answer:
a=-7
d=5
A18=a+17d
=-7+17(5)
=-7+85
=78. answer
Answered by
4
Answer:
answer is 78
Explanation:
to get the answer you have to follow a simple formula ie.
an=a+(n-1)d
~an=-7+(18-1)5
~an=-7+85
~an=78
A.P= a,a+d,a+2d
- A.P=-7,-2,3
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