Let
s--------> the length side of the cube
we know that
the volume of the cube is equal to
if the length side s is equal to 
then
and the volume is equal to
therefore
<u>the answer is the option</u>
D. A cube with side lengths of 2 feet has a volume of 8 cubic feet.
Answer:
c
Step-by-step explanation:
<h3>
Answer: A. 21</h3>
=======================================
C(n, r) = (n!)/(r!*(n-r)!) is the combination formula
C(7, 5) = (7!)/(5!*(7-5)!)
C(7, 5) = (7!)/(5!*2!)
C(7, 5) = (7*6*5!)/(5!*2!)
C(7, 5) = (7*6)/(2!) ..... note the "5!" terms divided and canceled
C(7, 5) = (7*6)/(2*1)
C(7, 5) = 42/2
C(7, 5) = 21
X=4 so your problem now would be 3+4=7
Hope this helps!
So in short your answer is 4
