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anonymous
 one year ago
Write an equation of the circle with center (5,−2) and radius 4
anonymous
 one year ago
Write an equation of the circle with center (5,−2) and radius 4

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MrNood
 one year ago
Best ResponseYou've already chosen the best response.2so you must be studying the equations of circles the general form is (xa)^2 +(yb)^2 = r^2 where (a,b) is the coordinate of the centre, and r is the radius in oyur case a=5 b=2 r=4 so pput those values into the general form to get your answer. (hint  be careful of the  signs...)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0hint: \(\bf (x{\color{brown}{ h}})^2+(y{\color{blue}{ k}})^2={\color{purple}{ r}}^2 \qquad center\ ({\color{brown}{ 5}},{\color{blue}{ 2}})\qquad radius={\color{purple}{ 4}}\)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0B is negative 2 how would i put that?

MrNood
 one year ago
Best ResponseYou've already chosen the best response.2it is still (yb) so put the 2 in place of b (that leaves 2  signs in front of the 2)

MrNood
 one year ago
Best ResponseYou've already chosen the best response.2yes  but you need the brackets to make it clear you can simplify the two minuses you can work out r^2
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