# Whats an explicit rule for this? 1, -4, -9, -14, etc. Write an explicit formula for the nth term an.

5 answers

###### Question:

Whats an explicit rule for this? 1, -4, -9, -14, etc. Write an explicit formula for the nth term an.

## Answers

-5n + 6

Step-by-step explanation:

It goes up in the - 5 times tables and you have to add 6 to get the real answer.

Find the difference between numbers to find the n. (-5n bit)

an=5n-9

Step-by-step explanation:

a1=-4

c.d. d=1-(-4)=1+4=5

if an =nth term then

an=-4+(n-1)5

or an=-4+5n-5

or an=5n-9

B. an=-4+5(n-1)

A would be the answer also if you need anyhelp instantly with math search up wolframalpha just wanted to say

This is an arithmetic sequence because each term is 5 more than the previous term, the defining characteristic of an arithmetic sequence which is called the common difference. All arithmetic sequences can be expressed as:

a(n)=a+d(n-1), a=1st term, d=common difference, n=term number, in this case a=-4 and d=5 so

a(n)=-4+5(n-1)

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