The sum of the first n terms of the arithmetic - вопрос №129852941064 от ivannadyudina2 31.01.2020 22:16

Question

Алгебра: The sum of the first n terms of the arithmetic progression 4,10, equals the 64th term of the arithmetic progression 21,42, find n? ​

ivannadyudina2 · Answer

Answer 21The solotion to this task...

The sum of the first n terms of the arithmetic progression 4,10, equals the 64th term of the arithmetic progression 21,42, find n? ​