Answer:
-4 (as - and + = -) 
Step-by-step explanation:
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Answer:
NO because 7+5=12
The sum must be larger (not equal to) the longest side. If it's exactly the same, there's no room to for the shorter two sides to angle up to form a triangle.
 
        
             
        
        
        
Answer: m = -3/2
Step-by-step explanation: Use the slope formula to find the slope m.
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Answer:
A) −3x + y = 3
B) 2x − y = −1  Adding both equations:
-x = 2
x = -2  y = -3
Step-by-step explanation: