8/25
-18/46
(if it says to simplify: -9/23)
The example that I can think of is a deck of playing cards. The two events that don't have a common set would be the black card and the red card. They are mutually exclusive because there can only be two possible colors. If the card is not red, then it is black (and vice versa). There is no card that consists of both colors.
Extract the normal vectors from the given planes:
(which are unique up to their signs, meaning either 
or 
are valid choices for the normal vector)
The third plane must be perpendicular to both these given planes, which means it would be parallel to both and 
, which in turn means its own normal vector 
should be perpendicular to both and .
Enter the cross product:
or (4, 5, 3), which also works.
The given plane passes through (-1, 1, 4), so its equation is
Simplify:
The formula is V= l × w × h or length times width times height.
V= 45×25×60 so the answer is 67,500 but make sure you put units in your answer!
Hope this helps!
4 I THINK is the answer not 100% sure though
