Jina has scored 76, 85, and 86 on her previous three tests. What score does she need on her next test so that her average (mean)
1 answer:
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Answer:
Explanation:
A circle whose center is and radius
, has equation:
The center of circle is given as origin , therefore:
This circle passes , then the radius of circle is the distance
between origin
and
=>
Substitute ,
, and
back into original equation:
or
Hope this helps!
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