Math, asked by alishaabraham, 1 year ago

Find the sum of the first 22 terms of the Ap: 8,3,-2.....

Answers

Answered by pranay0144
20

Answer:

Hey mate

I will help u

Answer

-979

Step-by-step explanation:

.

Here

a= 8

d= 3-8=5

n=22

Therefore by using the formula

s =  \frac{n}{2}  (2a + (n - 1)d)

S= 22/2(16+21*-5)

= 11(16-105)

=11 ( - 89)

S22= - 979[/tex]

Hp

Answered by ButterFliee
3

Answer:

first term = 8

common difference = 3-8

=-5

S22= n/2[2a + (n-1).d]

= 22/2[ 2.8 + (22-1).-5]

11[16+21*-5]

11[ 16-105]

11[ -89]

-979

S22= -979

hope it will help you

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