Answer: 504
Step-by-step explanation:
When we select r things from n things in a order , we use permutations.
Formula for permutation: 
Given : The number of family members who are potential kidney donors. = 9
Number of people needed to be selected for best match, a second-best match, and a third-best match ( in an order)=3
Then, the number of possible orders are = 
Hence, the number of possible orders 504.
Answer:
Let 
Solution: 
Step-by-step explanation:
See attached for step-by-step
In this right triangle we have the opposite and adj which is tangent
tan 37=9/x
since we have the x in the bottom so we switch it with tan37
which is
x=9/tan 37
x=11.94340339
x=11.94
So, 1=3 2=1 3=4 last one is a maybe but pretty sure
Convert the mixed number to an improper fraction...
To take a root of a fraction, take the root of the numerator and denominator separately
Final answer should be around 6.94622
