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Stella [2.4K]
3 years ago
5

What is the center of the circle having the equation (x – 7)2 + (y + 2)2 = 121? What is the radius?

Mathematics
2 answers:
frosja888 [35]3 years ago
6 0

Answer:

The center is (7, -2) and the radius is 11

Step-by-step explanation:

Just did the test on APEX :)

Sholpan [36]3 years ago
5 0
<span>The standard equation of a circle with center (h, k) and  radius : r 
is (x - h)² + (y - k)² = r².
h=7     k = -2      r = 11
the center is ( 7, -2)   and radius 11</span>
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A quadratic function is a function of the form y=ax^2+bx+c where a, b, and c are constants. Given any 3 points in the plane, the
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Answer:

The quadratic function whose graph contains these points is y=-x^{2}-2x-2

Step-by-step explanation:

We know that a quadratic function is a function of the form y=ax^{2}+bx+c. The first step is use the 3 points given to write 3 equations to find the values of the constants <em>a</em>,<em>b</em>, and <em>c</em>.  

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We can solve these system of equations by substitution

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