Question

Identify the 16th term of a geometric sequence where a1 = 4 and a8 = -8,748.

Answer 1

given a1 = 4
so 8th term is a1*r^7 = -8.748
solve the equation to get the value of r

Answer 2

I need help I don't know the formula

Answer 3

@sourav_aich

Answer 4

r is the common ratio
so if a1 is the first term then a1*r is the second and a1*r^2 is the third ......so a1*r^7 is the 8th term which is provided

Answer 5

and the 16th term will be a1* r^15

Answer 6

can you find r?