Question

find the sum of the AP
8,3,-2,...,to 22 terms​

Answer 1

Answer:

first term [a] = 8

common difference = a2 - a1 = 3-8 = -5

sum of n terms = n/2 [ 2a +(n-1)d ]

sum of 22 terms = 22/2 [ 2(8) + (21) (-5) ]

11[ 16 - 105]

11 (-89)

-979

Answer 2

Answer:

your answer's in the attachment :D

in the last 2 steps :-

= -11× 89

= -979

Step-by-step explanation:

FOLLOW BACK DIRECTIONER :D