2 years ago

Circumference = ×What is another way to write this?

1 answer:

8 0

Answer:

2 × pi × radius

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soldier1979 [14.2K]

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faltersainse [42]

Thank you very much and this “question” was very helpful for me.

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3 years ago

eduard

Answer: 504

Step-by-step explanation:

When we select r things from n things in a order , we use permutations.

Formula for permutation: $^nP_r=\dfrac{n!}{(n-r)!}$

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 = $^9P_3=\dfrac{9!}{(9-3)!}$

$=\dfrac{9\times8\times7\times6!}{6!}=504$

Hence, the number of possible orders 504.

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3 years ago