<span>the series of xcosx is x summation from k = 0 to k = infinity of ((-1)^k x^2k)/(2k)!</span>
Any

in this set will be real numbers that are both less than

and greater than

. But that's not possible, so this set is empty.
Answer:
Donna-71
Martina-62
Martina's sample
It has the smaller mean
Step-by-step explanation:
I apologize if this answer is incorrect but I think this is right.
Answer:
5 / 28
Step-by-step explanation:
5/7 ÷ 20/5
= 5/7 x 5/20
= (5 x 5) / (7 x 20)
= 25 / 140 (divide numerator and denominator by 5)
= 5 / 28