What is the 15th term of the sequence 20,16,12,8,4

The nth term for the arithmetic sequence is given by:

where,

is the first term.

d is the common difference of two consecutive term.

n is the number of terms.

As per the statement:

Given the sequence:

20, 16, 12, 8, 4

This is a arithmetic sequence.

Here, with common difference(d) = -4

Since,

16-20 = -4

12-16= -4

8-12 = -4

4-8 = -4

To find the 5th term of the sequence.

Substitute the given values and n = 15 we have;

⇒

⇒

Therefore, the 5th term of the given sequence is, -36

i dont know if you cant find a way its best to actually add all of them start from 105 tho

step-by-step explanation: