Answer:
None of these answers would work. You may have typed some wrong perhaps?
If

then we also have

Pairing up the terms, we can find that


consists of
terms, so there are
copies of
in the sum
. Then we find an immediate closed form for the sum:

Answer:
B. f(x)= 
Step-by-step explanation:
Answer:
3/60=1/20
Step-by-step explanation:
Answer:
the mean is 4
Step-by-step explanation:
ita 4 because first you add up the 10,3,2,5,0. and then it equals 20 and then divided and get the mean which is 4