Answer:
the connection is at 4 on x axis and 5 on y axis, so the solutions are x=4; y=5
 
        
             
        
        
        
Answer:d=0.8x+1
Step-by-step explanation:
To solve 0.5(2d-6)=0.2(4x-10)
Open the brackets
We get
d-3=0.8x-2
To make d the subject of formular 
d=0.8x-2+3
d=0.8x+1
 
        
             
        
        
        
Answer:
31.5
Step-by-step explanation:
 
        
                    
             
        
        
        
2 x 10=20 60-20=40. 40 treats left
        
             
        
        
        
Answer:
2
Step-by-step explanation:
<em>Add 1.5 to both sides:</em>
5/2x-1.5+1.5=3.5+1.5
5/2x=5
<em>Multiply both sides by 2/5</em>
(2/5)*(5/2x)=(2/5)*(5)