For each of the sequences, write a formula for the

Connor Randall

Connor Randall

Answered question

2022-01-23

For each of the sequences, write a formula for the general term. Use the formula to find a20
1)2,7,12,17,
2)6,1,1,9,
3)a0=4,d=0.3
4)a0=34,d=14

Answer & Explanation

Kingston Gates

Kingston Gates

Beginner2022-01-24Added 8 answers

a)2,7,12,17,
Here a0=2,a1=7,a2=12,a3=17,
Notice that a1=a0+5,a2=a1+5,a3=a2+5 and so on
Thus, here d=5
an=a0+d(n1)
So, a20=2+5(201)=97
b)6,1,1,9,
We have the formula
an=an1(5+3(n=0n1(1)))
By this formula the value of a20 can be found easily
c)a0=4,d=0.3
a20=4+(0.3)(201)=1.7
d)a0=34,d=14
a20=34+(14)(201)=4

Do you have a similar question?

Recalculate according to your conditions!

Ask your question.
Get an expert answer.

Let our experts help you. Answer in as fast as 15 minutes.

Didn't find what you were looking for?