Question

Find the sum of each finite arithmetic sequence :

1. 1+3+5+7+....+29
2. 5+8+11+....+26

Answer 1

To find the sum of a finite arithmetic sequence, use the formula: sum = (n/2)(first term + last term)

Step-by-step explanation:

To find the sum of a finite arithmetic sequence, you can use the formula:

sum = (n/2)(first term + last term)

For the first arithmetic sequence, we can use the formula with the values:

sum = (15/2)(1 + 29) = 15(30) = 450

For the second arithmetic sequence, we can use the formula with the values:

sum = (8/2)(5 + 26) = 4(31) = 124