Answer:
its the second one just took the test
Step-by-step explanation:
Answer:
(-2,0)
Step-by-step explanation:
To find the midpoint, we need to average our x's and then average our y's.
Our x's are -7 and 3. We average them together like so (-7+3)/2=-4/2=-2.
Our y's are 3 and -3. We average them together like so (3+-3)/2=0/2=0.
So the midpoint is
(average of x's , average of y's).
Our mudpoint is (-2,0).
Simplify
= 6/(gf^4)
hope that helps
Answer:
The probability is
Step-by-step explanation:
We can divide the amount of favourable cases by the total amount of cases.
The total amount of cases is the total amount of ways to put 8 rooks on a chessboard. Since a chessboard has 64 squares, this number is the combinatorial number of 64 with 8,
For a favourable case, you need one rook on each column, and for each column the correspondent rook should be in a diferent row than the rest of the rooks. A favourable case can be represented by a bijective function with A = {1,2,3,4,5,6,7,8}. f(i) = j represents that the rook located in the column i is located in the row j.
Thus, the total of favourable cases is equal to the total amount of bijective functions between a set of 8 elements. This amount is 8!, because we have 8 possibilities for the first column, 7 for the second one, 6 on the third one, and so on.
We can conclude that the probability for 8 rooks not being able to capture themselves is
It 7854
It will stay the same because the number after the decimal is 2 and 2 is least then 5 so it will all be zero
If the number is 5 of biger it will add up to 1
Ex: 246.810
It will be 247.000