Question

What is the 7th term of the geometric sequence where a1 = -4 and a5 = -1,024?

Answer 1

Do you know the formula for n'th term of geometric sequence??

Answer 2

use the same formula as in your last question

Answer 3

that was arithmetic, i believe ?

Answer 4

its not the same type of problem @Hope_nicole and no @hartnn I don't know it:(

Answer 5

yes it was arithmetic last time

Answer 6

\(\large a_n=a_1r^{n-1}\)

Answer 7

you have n= 5, a5 =-1024, a1 =-4
can you find 'r' first ?

Answer 8

how would I find r?

Answer 9

n= 5, a5 =-1024, a1 =-4
plug these values in that formula!

Answer 10

did you try ?