Question

Find the stated term of the geometric sequence.
-5, -10, -20, -40 ..., 9th term​

Answer 1

-1280

Explanation:

This geometric sequence has the first term -5 a = -5

And ratio : -10/-5 = 2 r = 2

9th term: (-5)(2^(9-1))

= (-5)(2⁸)

= -1280