Asked by Anonymous
If the sum of 3th and 8th terms of an A.p is 7 and the sum of 7th and 14th term is -3,find the 10th term .
Answers
Answered by
Reiny
term3 + term8 = 7
a+2d + a+7d = 7
2a + 9d = 7 **
term7 + term14 = -3
a+6d + a+13d = -3
2a + 19d = -3 ***
subtract ** from ***
10d =-10
d = -1
sub into *** to get a , then find a + 9d
a+2d + a+7d = 7
2a + 9d = 7 **
term7 + term14 = -3
a+6d + a+13d = -3
2a + 19d = -3 ***
subtract ** from ***
10d =-10
d = -1
sub into *** to get a , then find a + 9d
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.