Answer:
0.1667
Step-by-step explanation:
There are 6! ways to arrange the hats. The number of ways for which no guest will receive the proper hat is 5! (since there are 5 wrong hats for the first guest, 4 for the second guest, and so on). The probability that no guest will receive the proper hat is:

The probability is 0.1667.
16) yes, they are reflections on a summit.
17) no parallelogram shown to answer question <span />
ANSWER

EXPLANATION
The given problem is

This is defined if and only if

Even the given expression can be simplified to obtain:

The exclusion is

Answer:
3/2v
Step-by-step explanation:
v+1/2 is 1.5v or 3/2v.
Hope this helps :D
Answer:
Dimensions are 20 + 20 + 40 + 40
Step-by-step explanation: