Question

The sum of first 20 term od Arithmetic sequence is 480
a) what is the sum of its first and 20 term
b) if the 10 term is 23,what is its 11 term
c) what is the commen difference
d) can the difference between any two term of this sequence be 625? Why?​

Answer 1

Answer:

I hope it helped you thankyou

Step-by-step explanation:

In an arithmetic sequence a is the first term and d is the common difference. Thus, in an arithmetic sequence: U1= a = a uz=a+d =a+d Uz = (a +d)+ d = a + 2d u =(a +2d)+d=a+3d and so on. ... The formula for S, of an arithmetic series can be written in terms of the first term, a, and the common difference, d.