We know that
the equation of a circle is
(x-h)²+(y-k)²=r²
where
(h,k)-----> is the center
r--------> is the radius
is the center is the point (0,0) and radius r=20
then
(h,k) is (0,0)
(x-0)²+(y-0)²=20²---------> (x)²+(y)²=400
the answer is
the option D.) x2 + y2 = 400
Answer:
There are 400 trout and 1,200 of them are bass.
Answer:
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Step-by-step explanation:

Write -13x as a difference

Factor out x from the expression

Factor out -10 from the expression

Factor out x-3 from the expression

Hope I helped!
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Angles on a straight line add up to 180°, so:
x + 60 = 180
x = 180 - 60
x = 120°
Answer: The equation of a line is typically written as y=mx+b where m is the slope and b is the y-intercept.
Step-by-step explanation: