Question

qual o 35 termo da PA (-20.-16)

Answer 1

a1 = -20
r = -16 - (-20)
r = 4

a35 = -20 + (35 -1) *4
a35 = -20 + 34* 4
a35 = -20 + 136
a35 = 116

Answer 2

a1 = - 20       r = - 16 -( - 20) = -16 + 20 = 4       a35 = ?

a35 = a1 + 34r
a35 = - 16 + 34.4
a35 = - 16 + 136
a35 = 120

PA( - 20, -16, -12, - 8, - 4, 0. 4, 8, 12,16,20, 24, 28, 32, 36, 40, 44, 48, 52, 56, 60, 64,68, 72, 76, 80, 84,88,92, 96, 100, 104, 108, 112,116, 120