3. if there were less than 3 acute angles, the triangle would be either obtuse or right.
Answer:
The value of the given expression is -878.08.
Step-by-step explanation:
Here, the given question is INCOMPLETE.
The complete question is:
Evaluate the expression for a = 4, b = -5, and c = -7. 
Here, substitute the vale of a = 4, b = -5 and c = -7, we get:

Hence, the value of the given expression is -878.08.
Answer is =448 cm - Base is 24 cm- other bass is 32 cm - height is 16 cm
The numbers are: 2, 3, 4, 5, 6, 7, 8, 9, 10, 11
The answer is 8.the photos attached help