Question

Solve the 10th term of the arithmetic sequence with 8 as first term and -1 as fourth term

Answer 1

Answer:

-19

Step-by-step explanation:

a=8

T4=-1

Tn=a+(n-1)d

T4=8+(4-1) d

-1=8+3d

3d=-8-1

3d=-9

d=-3

T10=8+(10-1)-3

T10=8+(9×-3)

T10=8-27

T10=-19