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Anni [7]
3 years ago
15

A circle is centered at the point (-3, 2) and passes through the point (1, 5). The radius of the circle is ? units. The point (-

7, ?) lies on this circle.
Mathematics
2 answers:
Llana [10]3 years ago
8 0

Answer:

radius 5. (-7,-1) is on the circle

%100 correct on PLATO


Step-by-step explanation:


olganol [36]3 years ago
3 0
Hello,

The circle has like equation: (x+3)²+(y-2)²=r²

If x=1 then y=5 ==>(1+3)²+(5-2)²=r²==>4²+3²=r²==>r=5 (the radius)

if x=-7 then (-7+3)²+(y-2)²=25 ==>  (y-2)²=25-16==>y=2+3 or y=2-3
The points (-7,5) and (-7,-1) are on the circle.
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