Answer:
to get the answer add the -9 and the 3 to get 6,
Step-by-step explanation:
194.7
273.2 -(-78.5) = 194.7
Are the sides consistent with the Pythagorean Theorem?
6² + 8² ≟ 9²
36 + 64 ≠ 81, so it is not a right triangle.