Basically, we need to plug in the given values for the variables

and

into the given expression

. First off, we can plug in all the given values into the expression, giving us

. Now, perform the operations on the inside of the parentheses. Doing this, we get

. Now, we use the distributive property to simplify. This gives us

. Finally, when we add the two numbers, we get

. Hope this helped!
Answer:
...
Step-by-step explanation:
The equation (X-4)2 + (y+1)2 = 25 best describes the circle.
Answer:
and 
and b=
Step-by-step explanation:
We are given that a quadratic equation

We have to solve the equation by completing square and find the value of b.






and 

And 
Therefore,
and 
and b=
The total area of a circle is pi * radius^2
The total area of the circle is pi x 5^2 = 25pi sq. cm.
2/5 of this is success, so the answer is 2/5 * 25pi = 10 pi sq. cm.