Math, asked by chhavi224, 7 months ago

if 9th term of an AP is 0 prove that 29th term is double of 19 th term​

Answers

Answered by mohmmadskkhan8210
0

Answer:

T9=a+8d

a=-8d

where

T29=2×a+18d

a+28d=2×-8d+18d

-8d+28d=2×10d

20d=20d

proved

Answered by ayush2086
0

Answer:

9th term = a+(9-1)d

ATQ, 9th term is 0

so, 0=a+8d

a=-8d (i)

29th term will be

=a+(29-1)d

=a+28d

from i a=-8d

=-8d+28d

=20d

19th term= a+18d

= -8d+18d

=10d

HENCE

20D=2*10D

29TH TERM=2*19TH TERM

Similar questions