Question

Find the 15th term in the geometric sequence below.
20, 10, 5, 2.5, . . .

Answer 1

What is the ratio as you think ?

Answer 2

5?

Answer 3

for geometric series u are always multiplying by something to get to the next nmber in the sequence

Answer 4

20 * what = 10?

Answer 5

4

Answer 6

what is the relation ship between 20 and 10

Answer 7

10 is ____ of 20

Answer 8

NO, You can get the ratio by dividing the 2nd term over the 1st !
Like this :
\[r=\frac{a_2}{a_1}=\frac{5}{10}=\frac12\]

Answer 9

I kept dividing until I got to the 15th term and I got .001220703125

Answer 10

lol

Answer 11

was waitting for someone to say that

Answer 12

on the thing it comes out to a fraction.