Question

Find the algebraic expression of the sequence 2 , 7 , 12..... Examine whether 122 is a term of tis sequence

Answer 1

Answer:

YESSSSSSSS...........

Step-by-step explanation:

a=2

d=7-2=5

12-7=5

d=5

tn= a+(n-1)d

122=2(n-1)5

122=2+5n-5

122=5n-3

122-3=5n

125=5n

n=125/5

n=25

yes , 122 is the 25 th term of this ap