Answer:
y = 50
Step-by-step explanation:
All triangle angles add up to 180 degrees.
To set this equation up, you need to add everything given in the triangle and set it equal to 180:
y + y + 80 = 180 
<em><u>Add like terms:</u></em>
2y + 80 = 180
<u><em>Subtract 80 from both sides:</em></u>
2y + 80 = 180
      - 80   - 80
___________
2y = 100 
<u><em>Divide both sides by 2:</em></u>
y = 50
<u><em>If you're unsure, you can plug in the 50 for y:</em></u>
y + y + 80 = 180
50 + 50 + 80 = 180
100 + 80 = 180
180 = 180
 
        
             
        
        
        
<h2>
Answer:</h2>
<h3>True</h3>
<h2>
Step-by-step explanation:</h2>
<h3>Intrusive rocks, have large crystals that are usually visible without a microscope. </h3>
<h2>Therefore it's true. </h2>
<h2>Hope it help you </h2>
 
        
        
        
Answer:
-7x/6
Step-by-step explanation:
x/2-5x/3
Taking LCM
3x/6-10x/6
(3x-10x)/6
-7x/6
 
        
             
        
        
        
Answer: 0.92
1-4: stay the same
5-9: round up!
        
                    
             
        
        
        
Answer:
The variable
Step-by-step explanation: