Question

The algebraic form of an arithmetic sequence is 5n+4
a. What is the first term of the sequence?
b .What is the difference of 10th and 20th term?​

Answer 1

Answer:

a.9

a20=5*20+4=104

a10=5*10+4=54

a20-a10=104-54=50

Answer 2

a) first term n=1

5n+4 = 5+4 =9

b) a¹⁰ - a²⁰

5×10+ 4 -5×20-4

50 -100

-50