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find the sum of arthmetic

find the sum of arthmetic progression 12,15,18,,,,,, 84,a=12 d=3 n=?
1. 2 answers
2. asked by sonia
3. 401 views
(0, 14), (1, 20), and (2, 27) find the arthmetic sequence
1. 1 answer
2. 41 views
(0, 13), (1, 20), and (2, 27) find the arthmetic sequence
1. 1 answer
2. 32 views
(0, 14), (1, 20), and (2, 27) find the arthmetic sequence function of the given points
1. 1 answer
2. 35 views
Given the arthmetic sequence 2 old no 1 all over 2, 1,...., 71, find the common difference.
1. 1 answer
2. asked by Geometric
3. 369 views
(0, 13), (1, 20), and (2, 27) find the arthmetic sequence function of the following points
1. 1 answer
2. 39 views
In an arthmetic sequence, the fourth term is 84 and the tenth term is 60. Find the maximum possible partial sum.
1. 4 answers
2. asked by Abdela said yimer
3. 2,405 views
The sum of the first 5 terms of an arthmetic sequence, is 30 and the sum of the next 4 terms is 69 .Find the arthemetic
1. 3 answers
2. asked by Abdela
3. 586 views
in an arthmetic progression or series,the 13th term is 27 and the 7th iterm is 3 times the 2nd term ,find first term the common
1. 1 answer
2. asked by Anonymous
3. 654 views
Can you please help me in determining the 10th and 21st term of each arthmetic sequence
1. 1 answer
2. asked by Zinzi
3. 454 views