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
Answer:
D is true, E is true, F is true
Step-by-step explanation:
Hello,
n is an odd number it means that n = 2a+1 where a is integer
A

this is <u>not</u> an odd number
B

this is <u>not</u> an odd number
C

this is <u>not</u> an odd number
D

so this is an odd number
E

so this is an odd number
F

this is an odd number
hope this helps
Answer:
2
Step-by-step explanation:
hope that helped
The two point formula :

The points are (-2, 1) and (1, 10)
Using the formula above :

The answer is 3x - y = -7
Answer:
0.459 divided by 0.17 equals 2.7
Step-by-step explanation: