The correct answer is 3x+90=180
<em>Because you add the 2x and the x and you get 3x then there is a 90 degree angles so you add that and =180</em>
<em>Once you put it in the equation you can subtract 90 from 180 and you get 90 which you then divided by 3x and x equals 30</em>
<em />
<em />
 
        
             
        
        
        
Answer:
y = 45°
Step-by-step explanation:
4 sides = 360°
(2y+1)° + y° + 112° + 112° = 360°
 2y + y = 360 - 112 - 112 - 1
 3y = 135
 y = 135÷3
 = 45° 
 
        
             
        
        
        
Answer: 9-3x
Step-by-step explanation:
You add like terms
don't look at the 3x for now
positive 7 + positive 2 = 9
there is a negative sign next to 3x
9 goes first so 
9 - 3x
 
        
             
        
        
        
The answer should be if I am correct 
h times 5.25 
        
             
        
        
        
X should equal to 17 but i dont see what ben did...