The common ratio of a sequence is 1/2. Two terms in the sequence are a5=1 and a8=1/8

first term in the sequence:

recursive rule that describes the sequence:

Question

Mathematics

Haleigh Mclean

20 August, 17:45

The common ratio of a sequence is 1/2. Two terms in the sequence are a5=1 and a8=1/8

first term in the sequence:

recursive rule that describes the sequence:

+1

Answers (1)

Know the Answer?

Brenna Maddox · Answer 1

First term is 16

Step-by-step explanation:

Taking common ratio 'r' and first term 'A',

The term formula is:

A*[r^ (n-1) ]

Since r = 1/2, and the fifth term = 1

1 = A*[ (1/2) ^ (5-1) ]

1 = A*[ (1/2) ^4]

1 = A * (1/16)

A = 16

The common ratio of a sequence is 1/2. Two terms in the sequence are a5=1 and a8=1/8first term in the sequence:recursive rule that describes the sequence:

The common ratio of a sequence is 1/2. Two terms in the sequence are a5=1 and a8=1/8

first term in the sequence:

recursive rule that describes the sequence: