61.1k views
4 votes
16,8,4,2,1 find the next two terms

User HourGlass
by
7.9k points

2 Answers

4 votes

The next two terms are: 1/2 and 1/4

note: in decimal form, 1/2 = 0.5 and 1/4 = 0.25

==========================================

Step-by-step explanation:

This sequence is geometric with the common ratio r = 1/2 = 0.5

Multiply each term by 1/2 to get the next

16 times 1/2 = 16 times 0.5 = 8

8 times 1/2 = 8 times 0.5 = 4

4 times 1/2 = 4 times 0.5 = 2

2 times 1/2 = 2 times 0.5 = 1

1 times 1/2 = 1/2 = 0.5

1/2 times 1/2 = 1/4 = 0.25

So that's how we end up with 1/2 = 0.5 and 1/4 = 0.25 as the next two terms.

-----------

As a shortcut, you can use the nth term formula

an = 16*(1/2)^(n-1)

and plug in n = 6 and n = 7 to generate the next two terms a6 and a7. You should get 1/2 and 1/4 as your results.

User Gpol
by
8.0k points
2 votes
the next terms are 1/2 and 1/4. you divide by two next each.
User Tommy
by
7.5k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories