Answer:
x = 3
y = 2
Step-by-step explanation:
4x + 3(3x - 7) = 18 <em>Substitute</em><em> </em><em>y</em>
4x + 9x - 21 = 18 <em>Simply</em>
13x - 21 = 18 <em>Add</em><em> </em><em>like</em><em> </em><em>terms</em>
13x = 39 <em>Add</em><em> </em><em>2</em><em>1</em>
x = 3 <em>Divide</em><em> </em><em>by</em><em> </em><em>1</em><em>3</em>
y = 3(3) - 7 <em>Substitute</em><em> </em><em>x</em>
y = 9 - 7 <em>Simply</em>
y = 2 <em>Subtract</em>
Let's check:
4(3) + 3(2) = 18
12 + 6 = 18
18 = 18
It works!
 
        
                    
             
        
        
        
Answer:
x=2
Step-by-step explanation:
 
        
                    
             
        
        
        
A geometric figure enclosed by a circle is called an inscribed figure.
        
                    
             
        
        
        
Answer:

Step-by-step explanation:
Given
 and
 and 
Required
The relationship between them  and
 and 
From the question, we understand that  and
 and  are supplementary
 are supplementary
Supplementary angles add up to 180. 
So, the relationship between  and
 and  is:
 is:

 
        
             
        
        
        
14        20
----  =  -----  cross multiply
3x       x-5
14(x-5) = 3x (20)
14x - 70 = 60x
-14x          -14x
-70 = 36x
/36    /36
-70/36  = x
or 
-35/18 = x