Question

the algebraic form of an arithmetic sequence is 7n+3 what is its common difference?​

Answer 1

7

Step-by-step explanation:

7n+3

Putting values in n

n=1

7(1)+3=7+3=10

a=10

n=2

7(2)+3=14+3=17

a2=17

d=a2-a

d=17-10=7

d=7

Answer 2

Answer:

=> d = 7

Step-by-step explanation:

=> An = a + (n - 1)d

=> An = a + dn - d

=> An = dn + (a - d)------------(Equation:1)

=> An = 7n + 3------------------(Equation:2)

On Comparing Equation '1' and '2', We get,

=> dn = 7n

Therefore,

=> d = 7