Question

determine the AP whose third term is 5and the seventh term is 9​

Answer 1

A3=5

a+2d=5

A7=9

a+6d=9

Answer 2

Step-by-step explanation:

A(3) = a + 2d = 5

A(7) = a + 6d = 9

4d = 4

d = 1

a = 5 - 2(1) = 5 - 2 = 3

The A.P. is ( 3 , 4 , 5 , 6 , 7 , 8 , 9 ,.......)