The sum of first 10 terms is 620.
What is arithmatic progression?
Arithmetic Progression (AP) is a numerical series in which the difference between any two subsequent numbers is always the same.
How to find the sum?
Here a1= 8,a2 = 20,a3 = 32 and a4= 44
Find the difference between two terms
a2 - a1 = 20 - 8 = 12
a3 - a2 = 32 - 20 = 12
a4 - a3 = 44 - 32 = 12 sum of n terms is = n/2[2a1 + (n-1)d]
For the given sequence we have n = 10, a1= 8 and d = 12
substituting values of a1 and n in S = 10/2[2x8 + (10-1)x12]
S = 5[16+9x12]
S = 5[16+108]
S = 5[124]
S = 5x124
S = 620
Learn more about arithmetic progression here: https://brainly.com/question/236376
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