the 6th and the 17th terms of an ap are 19 and 41 respectively find the 13th term of the AP also find the sum of first 30 terms of the AP
Answers
Answered by
1
The below picture can help you.. Please adjust with the quality.. Thank you.
Attachments:
Answered by
4
a+5d=19
a+16d=41
elemination method
11d=22
d=2
substitute
a+5(2)=19
a=9
9+13(3)=48
n/2(2a+(n-1)d
15(2)(9)+(29)(2)
30(9)+58
270+58
328
a+16d=41
elemination method
11d=22
d=2
substitute
a+5(2)=19
a=9
9+13(3)=48
n/2(2a+(n-1)d
15(2)(9)+(29)(2)
30(9)+58
270+58
328
ThePlusOfminus:
Wrong
Might be
Similar questions