Question

Dik geometry sequence 5.10, ... 5120. determine how many tribes of the sequence they are

Answer 1

Known :

a = 5

r = 10/5 = 2

Un = 5120

Asked: Many tribes (n)

Settlement:

Un = a. r ^ (n - 1)

5120 = 5. 2 ^ (n - 1)

5120/5 = 2 ^ (n - 1)

1024 = 2 ^ (n - 1)  

2 ^ 10 = 2 ^ (n -1)

10 = n - 1

n = 10 + 1

n = 11

Mapel: Mathematics

Chapter: Rows and rows

Material: Geometry sequence

Class: IX Middle School