Question

2) Consider the arithmetic sequence 8, 13, 18

common difference is 3

b) What is the difference between its first term and common difference ?

c) What is its algebric form
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Answer 1

Answer:

b) 5

c) 8-3=5

Step-by-step explanation:

b) here first term is 8 and the common difference is 3 so,

=>8-3=5

Answer 2

Step-by-step explanation:

b) 13-8=5

d=5

c) 8,13,18

a2-a1=13-8=5

a3-a2=18-13=5

General Form :

an = a+(n-1)d

an=8+(n-1)5

18-8=(n-1)5

10/5=n-1

2=n-1

n=3

n(an+l)/2

3(8+18)/2

=39

algebric form

y=5x+8