Work is provided in the image attached.
Answer:
The lower bound of 19.4 is 19.35
Answer:
<h2>The radius is 4 units long.</h2>
Step-by-step explanation:
The given equation is

This equation belongs to a circle, which center is at (0.5, 3.5) and its radius is 4.
You can deduct its elements, becase this equation of the circle is explicit, which means the constant term represents the square power of the radius. Solving that, we have

Therefore, the radius is 4 units long.
1 - 9
2 - 87
3 - -2
4 - -9
that’s the answers for them :), have a great day !! :)
Answer:
we can proove by ASA congruence or SAS congruence rule