Question

Fine the 8th term of the geometric sequence 10,50,250

Answer 1

ar⁷= 781,250

Explanation:

a =10

ar =50

ar² = 250

8th term = ar⁷=?

r = ar/a

= 50/10

r =5

ar⁷ = 10 × 5 ⁷

=10 × 78125

= 781,250

Answer 2

781250

Explanation:

The sequence is has common ratio of 5 so the equation is 10*5^x-2 or 2*5^x so 2*5^8=781250