Question

Determine 4th term in the geometric sequence whose first term is -2 and whose common ration is -5.

Answer 1

Answer:

$a_{4}$ = 250

Step-by-step explanation:

To obtain any term in the geometric sequence multiply the previous term by the common ratio r

here r = - 5 and $a_{1}$ = - 2, hence

$a_{2}$ = - 2 × - 5 = 10

$a_{3}$ = 10 × - 5 = - 50

$a_{4}$ = - 50 × - 5 = 250