Orlando is making a design for a logo. He begins with a square measuring 20 inches on each side. The second square has a side length of 16 inches, and the third square has a side length of 12.8 inches. Which square will be the first square with a side length of less than 8 inches?
I'm thinking the sixth square..........
looks like each side is 4/5 of its previous , so
20(4/5)^n = 8
(.8)^(n-1) = .4
using logs
(n-1) log .8 = log .4
n - 1 = 4.1
n = 5.1
so the 5th would be less than 8
and the 6th would be greater than 8
e.g.
1st --- 20
2nd -- 16
3rd -- 12.8
4th -- 10.24
5th -- 8.192
6th -- 6.5536
You were right, how did you reason it ?
i hate jail
Naw man....
I aint even mean to shoot him, he just caught me by surprise.. 😔