J -60
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12 ×4^4/4^2
=12×4^2
=12×16
=192
Answer:
x = 50°
Step-by-step explanation:
180° - 80° = 100°
100° ÷ 2 = 50°
50° + 50° + 80° = 180°
Hello.
is a quadratic function, because it has an
(x squared, or x times x) term.
Here's what linear functions look like:

A graph of a linear function is a line.
Quadratic functions look like so:

A graph of a quadratic function is a parabola.
Therefore, the given function is a quadratic function.
I hope this helps.
Have a nice day.

No the side lengths of 9,12, and 18 doesn’t form a right triangle. Posted a picture showing all the side length that is a right triangle.