Question

sixth term of an arithmetic sequence is 19 and its 10th term is 31. (a) what is the first term. (b) what is the common difference.​

Answer 1

Answer:

1. 2
2. 3

Step-by-step explanation:

commo difference, d= (31-19) / 10-6

=12/4 =3

first term is, x1=??

x6 = 19

x5 = 19-3 =15

x4 = 15-3 =12

x3 = 12-3 = 8

x2 = 8-3 = 5

x1 = 5 -3 = 2