What is the value of the fourth term in geometric sequence for which a1 = 15 and r = 1/3?

the fourth term is 5/9

Step-by-step explanation:

a sequence is defined like this:

1, 2, 3,4…….. n  

1= first term

2=second term

3= third term

n=term n of the secuence

a geometric sequence is defined as follows

The General formula to calculate the term n of a geometric sequence is:

                         Formula (1)

We can calculate any term of the sequence by replacing the information known in the formula (1):

For this case: a=a1=15 ,   r=1/3

                  Formula (2)

We replace n=4 in the formula 2  

The fourth term of the geometric sequence is 5/9

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.

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step-by-step explanation:

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