Answer:
The set of natural numbers {1,2,3,…}.
The set of even numbers {2,4,6,8,…}.
Step-by-step explanation:
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<span>they are perpendicular.</span>
This was my thought process reading this problem( I divided 9 by 207 which is 23 and multiplied each number by that)
The standard form of a circle:

Where:
(h; k) - the coordinates of a centerr - the radius
We have:

therefore

- the center

- the radius
Answer: 11
a=35 b=55
this is because sohcahtoa and calculators says so, and the calculator is always right. Also, my calculator is broken :(