The probability that after re-rolling these three dice, at least three of the five dice show the same value is 
Of the three dice rolled, one may match the original pair and two are different, and this can occur three ways:
[ where 
is the probability of matching the first two and 
is the probability of not matching the first two ]
Or, two may match the original pair and one is different
Or, all three may match the original pair
Or, all three may be the same, but not match the original pair:
[ where is the probability of getting a new number and is the probability of matching that new number ]
Adding these together: 
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start with y= m(x+9)
Use the distributive property:
y= mx+9m
Now you want x to decrease by 6:
so y ' = m(x-6) + 9m
Use distributive property again:
y'= mx - 6m + 9m
y' = (mx+9m) - 6m
y' = y - 6m
So the value of y decreases by 6m.
Answer:
(2a, 0)
Step-by-step explanation:
the distance from (a,0) and z from the origin and to each other is both 3. It’s in the middle of two points, there’s an equal distance between w to y and y to z. I hope that makes sense, so, to get the x coordinate multiply a by 2.
C is correct
(x+3)^2
(x+3)(x+3)
x^2+3x+3x+9
x^2+6x+9
