Answer:
1/9
Step-by-step explanation:
Becuase there are 9 people invited, so they all have a 1/9 chance
for volume of prism you do area of cross section * height
area = 36
height = 15
=36*15
=540cm ^3
L=3W+10 and P=2(L+W)=36
36=2(3W+10+W)
36=8W+20
8W=16
W=2 and since L=3W+10=16
W=2 and L=16
Imagine that the variable c represents something tangible, like an orange. So what this equation is asking is subtract 1 orange from 12 oranges. So you are left with 11 oranges.
Another way to think about this problem is if you rewrite the equation slightly to:
12c - c =
12c - 1c =
11c
It might help you to put the coordinates on a graph.<span />