Answer:
subtract 8.5
Step-by-step explanation:
this will isolate y 
 
        
                    
             
        
        
        
Is there more info to this?
        
             
        
        
        
Answer: 4
Step-by-step explanation: To have an equation with no solution you have to get something like 0=1 meaning you have to remove all the variables. In this equation you would distribute to get xy+2y+2x=2x+12+4x where y is the missing number. then combining like terms you get xy+2x+2y=6x+12. Subtracting 2x from both sides you get xy+2y=4x+12. Now to get the variables gone y has to be 4 so that the variables to cancel out. By plugging in 4 you can see this works; 4x+8=4x+12 and by subtracting 4x from both sides you get 8=12 which is not true meaning there is no solution.
 
        
                    
             
        
        
        
Yes you are correct 20% of 150 is 30.
 
        
                    
             
        
        
        
The problem says that <span>Brandon sights a helicopter above a building that is 200 feet away at an angle of elevation of 30 degrees. So, you can calculate the height asked, by following this procedure:
</span>
 Tan(α)=Opposite leg/Adjacent leg
 α=30°
 Opposite leg=x
 Adjacent leg=200 feet
 When you substitute these values into the formula above (Tan(α)=Opposite leg/Adjacent leg), you have:
 Tan(α)=Opposite leg/Adjacent leg
 Tan(30°)=x/200
 
 You must clear "x":
 x=200xTan(30°)
 Therefore, the value of "x" is:
 x=115 feet
<span>
 How high above the ground the is the helicopter?
 The answer is: 115 feet</span>