Answer:

7th term is 2.5

Step-by-step explanation:

common ratio is 1/2

Answer:

Step-by-step explanation:

Let,

n = 7

r = 1/2

a_1 = 160

solve for a_7:

a_n = a_1r^n-1

a_7 = 160(1/2^7-1)

a_7 = 160(1/2^6)

a_7 = or 2.5 or 2 1/2