As part of a daily workout program. Participants must do lunges along the length of a pool, swim the diagonal of the pool, and t
1 answer:
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Answer:
The radius is 10
Step-by-step explanation:
Given
Required
The radius
Rewrite as:
Subtract 81 from both sides
Expand
Factorize
Factor out y - 9
Express as squares
The equation of a circle is:
By comparison: