1. Is the sequence 0.3, 1.2, 2.1, 3, ... arithmetic? If so find the common difference. 2. An arithmetic sequence has the first term a_{1} = -4 and com

Rivka Thorpe

Rivka Thorpe

Answered question

2020-12-03

1. Is the sequence 0.3,1.2,2.1,3,... arithmetic? If so find the common difference.
2. An arithmetic sequence has the first term a1=4 and common difference d=43. What is the 6th term?
3. Write a recursive formula for the arithmetic sequence 2,72,5,132... and then find the 22nd term.
4. Write an explicit formula for the arithmetic sequence 15.6,15,14.4,13.8,... and then find the 32nd term.
5. Is the sequence 2,1,12,14,... geometric? If so find the common ratio. If not, explain why.

Answer & Explanation

Bella

Bella

Skilled2020-12-04Added 81 answers

Step 1
Given:
a1=4
d=43
a6=?
Step 2
We know in A.P
tn=a+(n1)d
Where a is the first term, d the common difference
t6=4+(61)(43)
=4+(5)(43)
=4203
=12203
=323

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