Question

they sat for a while on the bank identity the phrase ​

Answer 1

Explanation:

Let \displaystyle {a_n}an be a finite arithmetic progression and k be a natural number. \displaystyle a_1=r < 0a1=r<0 and \displaystyle a_k=0ak=0. Find \displaystyle S_{2k-1}S2k−1 (the sum of the first 2k-1 elements of the progression).

Answer 2

Answer:

Adverbial phrases. I think so.........