5. find the sum of the first 35 terms of the arithmetic sequence when a = 5 and d = 4

The sum of the first 35 terms of the arithmetic sequence when a = 5 and d = 4 is 2555.

Step-by-step explanation:

Given:

a = 5

d =  4

To Find :

The sum of first 35 terms of the arithmetic sequence  = ?

Solution:

Step 1 : finding the 35th term

Step 2: Finding the sum of first 35 terms

Substituting the values