(1) The missing term in the sequence, aββ Β = 0.8.(2) The missing term in the sequence, aβ = 102.5.(3) The missing term in the sequence, aβ = 111.(4) The missing term in the sequence, aββ = -19.(5) The missing term in the sequence, aββ = 94.(6) Β The missing term in the sequence, aβ = 40.(7) Β The missing term in the sequence, aββ = -52.(8) Β The missing term in the sequence, aββ = -58.Missing term of the sequenceThe missing term in the sequence is determined as follows;Tβ = a + (n - 1)d1.0 aβ = 18.4 and aβ = 16.2, aββ = ?Tβ = a + 3d18.4 = a + 3d Β ---(1)Tβ = a + 4d16.2 = a + 4d Β ---(2)subtract (1) from (2)-2.2 = d18.4 = a + 3(-2.2)a = 25aββ Β = a + 11daββ Β = 25 + 11(-2.2)aββ Β = 0.82.0 aβ = 57.5 and aβ = 80, aβ = ?aβ = a + d57.5 = a + d -- (1)aβ = a + 4d80 = a + 4d Β --- (2)solve (1) and (2)d = 7.5a = 50aβ = Β a + 7daβ = 50 + 7(7.5)aβ = 102.53.0 aββ = 141 and aββ = 186, aβ = ?aββ = a + 9d141 = a + 9d --- (1) aββ = a + 12d186 = a + 12d --- (2)Subtract (1) from (2)d = 15a = 6aβ = a + 7daβ = 6 + 7(15)aβ = 1114.0 aββ = -49 and aββ = -58, aββ = ?aββ = a + 21d-49 = a + 21d ---- (1)aββ = a + 24d-58 = a + 24d --- (2)subtract (1) from (2)d = -3a = 14aββ = a + 11daββ = 14 + 11(-3)aββ = -195.0 aβ = -2 and aβ = 46, aββ = ?aβ = a + 3d-2 = a + 3d --- (1)aβ = a + 7d46 = a + 7d ---- (2)Subtract (1) from (2)d = 12a = -38aββ = a + 11daββ = -38 + 11(12)aββ = 946.0 aβ = 64 and aββ = 88, aβ = ?aβ = a + 8d64 = a + 8d --- (1)aββ = a + 11d88 = a + 11d --- (2)Subtract (1) from (2)d = 8a = 0aβ = a + 5daβ = 0 + 5(8)aβ = 407.0 aββ = -4 and aββ = -13, aββ = ?aββ = a + 19d-4 = a + 19d ---- (1)aββ = a + 22d-13 = a + 22d --- (2)Subtract (1) from (2)d = -3a = 53aββ = a + 35daββ = 53 + 35(-3)aββ = -528.0 aββ = 5 and aββ = 50, aββ = ?aββ = a + 27d5 = a + 27d ---- (1)aββ = a + 32d 50 = a + 32d --- (2)Subtract (1) from (2)d = 9a = -238aββ = a + 20daββ = -238 + 20(9)aββ = -58Learn more about arithmetic progression here: