if the 9th term of the a.p is zero,prove that its 29 term is twice the 19th tern

Claim your Biolink Click Here
0 like 0 dislike
793 views
in Science & Mathematics by (0 points) | 793 views

1 Answer

0 like 0 dislike

Given,

 a+8d=0

19th term of ap= a+18d

  =(a+8d)+10d

  = (0)+10d

  = 10d  .................(1)

29th term = a+28d

  =(a+8d)+20d

  = (0)+20d

  =20d ..............(.2)

From (1) & (2), it can be obsrevd that 29th term is double the 19th term.

Hope it helps..

by (820 points)

Related questions

1 like 0 dislike
1 answer
Why it is said that coke + mint if taken together acts as a poison?
asked Nov 1, 2013 in Science & Mathematics by Shri periwal (-240 points) | 697 views
0 like 0 dislike
0 answers
prove that 1/1+^a-b +1/1+x^b-a =1
asked Sep 23, 2013 in Science & Mathematics by aayush | 687 views
0 like 0 dislike
0 answers
a molal solution is one that contains 1 mole of a solute is
asked May 8, 2014 in Science & Mathematics by prashant674 (-20 points) | 207 views
0 like 0 dislike
0 answers
if 2^x + 2^y = 2^(x+y), then the value of dy/dx at x=1, is equal to?
asked Sep 22, 2013 in Science & Mathematics by Deepanshu Srivastava | 770 views
0 like 0 dislike
1 answer
explain whether the walls of a classroom is at rest or in motion .
asked Jun 28, 2014 in Science & Mathematics by Kartik Yadav (0 points) | 7.7k views
0 like 0 dislike
1 answer
A portion of the population selected to represent the population is called
asked May 11, 2014 in Science & Mathematics by amanjeetjaggi (-10 points) | 830 views
0 like 0 dislike
0 answers
the odds in favour of throwing at least 8in a single throw with two dice is
asked Jan 26, 2014 in Science & Mathematics by vikram ranjan (0 points) | 387 views

Where your donation goes
Technology: We will utilize your donation for development, server maintenance and bandwidth management, etc for our site.

Employee and Projects: We have only 15 employees. They are involved in a wide sort of project works. Your valuable donation will definitely boost their work efficiency.

How can I earn points?
Awarded a Best Answer 10 points
Answer questions 10 points
Asking Question -20 points

Most popular tags

Related questions

1,314 questions
1,476 answers
569 comments
4,809 users