For any circle with Cartesian equation

,
we have that the centre of the circle is

, and the radius of the circle is

.
So in the case that

,
we essentially have that

.
So the centre of the circle is

, and the radius is

.
Answer:
the answer is that he would have to win 7 games in a row to get 75%
Step-by-step explanation:
It is B. simple random sample
Answer:
can be written as
which is into the form
.
Step-by-step explanation:
Considering the expression



writing into the form of the equation

so

Here:
Therefore,
can be written as
which is into the form
.