On a test Matilda answer 12 are the first 15 problems correctly at this rate continues how many of the next 25 problems while sh
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Answer:
See below.
Step-by-step explanation:
Recall the equation for a circle:
, where (h,k) is the center and r is the radius.
We need to turn the given equation into the above format. We do this by completing the square.
First, group them:
For the first section, complete the square for :
Do the same for the second:
All together:
The center is (-9,-7).
The radius is