Twice the difference of a number and 9 equals 5.
1 answer:
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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.
I think this is right
I didn't get all the part with the tiles, but here's the general answer:
given a polynomial
we have that is a factor of
if and only if k is a root of
, i.e. if
So, given the polynomial
We can check if is a factor by evaluating
:
So, is not a factor.
Similarly, we can evaluate to check if
are factors:
So, only is a factor of