To determine the effect of the radius changes to the coefficients, we need to rewrite the form of the equation into:
(x−α)²+(y−β)²=r²
From the equation, we will see that:
C=−α∗2
D=−β∗2
and α²+β²−r²=E
where r represents the radius of the circle and α,βare the coordinate of the center of the circle.
Therefore, when the r decreases the coefficients C and D do not change but E increases.
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Answer:
1
Step-by-step explanation:
I hope it's helpful for you
5x+15 = 6x-10
Subtract 5x from 6x which leaves you with 15 = x-10
Now you add 10 to both sides of the equal sign. 25 =
x=25
Answer:
Square foot need to be painted, if width is equal to
feet
Step-by-step explanation:
Complete question -
Maya wants to paint one wall in her room blue. The wall is 22,9 feet high, and have no doors or windows. How many square feet need to be painted?
Solution -
The square feet need to be painted will be equal to the product of height and width of the wall i.e surface area of the wall
Let the width of the wall be
feet
Surface area of the wall 
Where H is the height of the wall in feet
W is the width of the wall in feet
Substituting the given values in above equation, we get -

Square foot.
Thus,
Square foot need to be painted
Answer:
C
Step-by-step explanation:
we can mark sea level as 0 on a numberline so location one is 20 units above 0 and location 2 is 50 units below 0 20 is a higher value so the answer is c.