Equation : (7x-4)+(3x-3)+(x) = 180 
In the equation the sum of the internal angle in the triangle is 180 degrees. Use this equation to figure the sum of angle in any quadrilateral 180*(number of sides-2) 
Solve the equation 
Put all similar variable on one side 
7x+3x+x-4-3=180
11x-7=180 
11x=180+7 
11x=187 
x = 187/11 
x = 17 
Now find the angles by plugging in x
Angle F (7*17-4) = 115 degrees 
Angle G (x) = 17 degrees 
Angle E (3*17-3) = 48 degrees 
If you add 115+48+17 you will get a sum of 180 this shows your answer is right 
Angle F = 115 
Angle G = 17 
Angle E = 48
        
             
        
        
        
I would use the quadratic formula for this:
  x = -b ± √b² - 4ac over 2a
  x = 8 ± √64 - 4(1)(0) over 2(1)
  x = 8 ± √64 over 2
  x = 8 <span>± 8 over 2 [simplify]
  x = 4 </span><span>± 4
     x1 = 4 + 4    x2 = 4 - 4
     x1 = 8          x2 = 0
Thus, the solutions for x would be 0 and 8.</span>
        
             
        
        
        
Answer:
 should be correct!
 should be correct!
Step-by-step explanation:
 
        
                    
             
        
        
        
Let's say this number is a:
a*(a-9) = 90
a^2-9a-90 = 0
(a-15)(a+6) = 0
a = 15 or a = -6
Therefor a. would be the correct answer :)
        
             
        
        
        
Answer:
P=12
Step-by-step explanation: