Answer:
20
Step-by-step explanation:
Answer:
Step-by-step explanation:
3. function
4. not a function
5. function
6. not a function
7. function
8. not a function
Answer:
Step-by-step explanation:
a1=2/3
sequence is 2/3,3/4,4/5,...
for numerator a1=2
d=3-2=1
numerator of nth term=a1+(n-1)d=2+(n-1)×1=2+n-1=n+1
denominator = 1 more than numerator=n+1+1=n+2
so an=(n+1)/(n+2)
or for denominator a1=3,d=4-3=1
denominator of nth term=3+(n-1)×1=3+n-1=n+2
an=(n+1)/(n+2)
Answer: 
Work Shown:

This can be rewritten into 
Answer:
6
Step-by-step explanation: