Answer:
B. 4√3
Step-by-step explanation:

Answer:
0.286
Hope that helps!
Step-by-step explanation:
Answer:
66 inches
Step-by-step explanation:
:))
Answer:
90 arrangements
Step-by-step explanation:
Since there are no repititions of letters, there are unique 10 letters in total.
THe number of arrangements would be 2 permutation 10. We need the formula for permutation. That is:

Now, n = 10 [total] and r is 2, so we have:

So, there can be 90 arrangements