Question Find the sum of the first 10 terms of an arithmetic sequence with an eighth term of 8.2 and a common difference of 0.4.

The sum of first 10 terms is 72. Concept: Arithmetic Progression (AP) is a sequence of numbers in order, in which the difference between any two consecutive numbers is a constant value. It is also called Arithmetic Sequence. Arithmetic Progression Formula = an – a. nth term of an AP: an = a + (n – 1)d. Sum of n terms of an AP: Sn = n/2(2a+(n-1)d) = n/2(a + l), where l is the last term of the arithmetic progression. Given: Eighth term is 8.2 Common difference is 0.4 a(8) = 8.2 a + 7d = 8.2 Since d = 0.4 a + 7(0.4) =8.2 a = 5.4 Sum of 10 terms = n/2 (2a+(n-1)d) = 5(2*5.4 + 9*0.4) =5(10.8 +3.6) Sum=72 For more information about arithmetic progression, visit https://brainly.com/question/6561461 #SPJ4 Reply

sum of first 10 terms is 72.Concept:Arithmetic Progression (AP) is a sequence of numbers in order, in which the difference between any two consecutive numbers is a constant value. It is also called Arithmetic Sequence.Given:a = 5.4Sum=72arithmetic progression, visithttps://brainly.com/question/6561461#SPJ4