If you put 4 over 20 and did a ratio to x over 100 it would be 20%
Answer:2
Step-by-step explanation: two 1 equal one 2
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