# What would the formula for the nth term be given 0.3, -0.06, 0.012, -0.0024, 0.00048, ...?

##### 2 Answers

Jul 2, 2018

#### Explanation:

Given series:

has first term

Now, the

Jul 2, 2018

#a_n=(0.3)(-0.2)^(n-1)#

#### Explanation:

Here, the given sequence is :

#0.3,-0.06,0.012,-0.0024,0.00048,...#

The first term

The common ratio :

This is the geometric sequence :

#a_n=a_1(r)^(n-1)#