Well there really wouldn't be a combo since everything is different so I'm saying nun? that's what I'm going with. ( If this is wrong correct me )
        
             
        
        
        
Answer:
3x +45°=180° (due to straight angle)
or, 3x= 180°-45°
or,3x= 135°
or,X=135°/3
 X =45°.ans
 
        
             
        
        
        
Answer:
34.5 units²
Step-by-step explanation:
7 x 3 = 21
4.5 x 3 = 13.5
21 = 13.5 = 34.5 units²
 
        
             
        
        
        
To "rationalize the denominator" is another way to say, getting rid of that pesky radical at the bottom.
we'll simply start by multiplying top and bottom by the "conjugate" of the denominator, recall difference of squares, anyhow, let's do so
 
 
        
        
        
The answer is: Perpendicular, because both equations intersects or cross over each other. There is an attached photo