Posted by **oladepo** on Tuesday, August 6, 2013 at 8:52am.

d 9th term of an Ap is 52 while d 12th term is 70. find sum of it's 20th term?

- math -
**Reiny**, Tuesday, August 6, 2013 at 9:22am
Just answered you previous post of the same question.

BTW, "find the sum of it's 20th term" is confusing.

I found the 20th term.

If you want the sum of the first 20 terms, use the values of a and d I found for you and use the formula.

## Answer This Question

## Related Questions

- math - the 9th term of an AP is 52 while the 12th term is 70.find the sum of its...
- math - pls help me out in dis ? dat says The 9th term of an Ap is 52 while d ...
- arithmetic progression - the 9th term of an AP is 52 while the 12th term is 70. ...
- algebra - the 9th term of an A.P is 52 while he 12th term is 70. find the sum of...
- arithmetic - The 9th term of an A.p is 32 while the12th termis70.find the sum of...
- arithmetic - Determining the first three terms of an ArithmetiC progressionof ...
- Math - The sixth term of an arithmetic sequence is 20.6 and the 9th term is 30.2...
- mathematics - THE 1ST, 3RD AND 9TH TERM OF A LINEAR SEQUENCE A.P ARE THE 1ST ...
- maths - The 4th term of an ap is 15 while the 7th term is 27, find the sum of ...
- Maths - 1) In the arithmetic progression, the 8th term is twice the 4th term and...

More Related Questions