Question

determine the ap whose 3rd term is 8 and the 7th term is 12​

Answer 1

Step-by-step explanation:

=> a3 = 8 and a7 = 12

=> a3 = a + ( 3-1 ) d. a7 = a + ( 7-1 ) d

=> 8 = a + 2d --- 1 12 = a + 6d ---- 2

=> from 1 and 2

=> 4d = 4. => d = 1

=> from 1

a + 2 (1) = 8

a + 2 = 8

a = 8 - 2 = 6

=> a1 = a = 6

a2 = a + d = 6 + 1 = 7

a3 = a + 2d = 6 + 1*2 = 6 + 2 = 8

A.P = 6, 7, 8, 9

plz mark me as brainlist