Answer:
Step-by-step explanation:
P=2l+2w
28=2l+2w
2l=2w-28
l = (2w-28)/2
l =2(w-14)/2
l = w-14
 
        
             
        
        
        
Answer:
Sam = 18 and Marlon = 12
Step-by-step explanation:
If Sam is 6 years older but added is 30 then Sam could 18 and Marlon 12.
 
        
                    
             
        
        
        
Answer:
Part A:
- angle ACB= 60° (ABC equilateral triangle.)
- Angle ECD=EDC= (180°-32°)/2= 148/2= 74° (sum of angles in a triangle is equal to 180, and triangle ECD is isosceles since it's given that CE=DE.
- x= 180°-(60°+74°)
    = 180°-134°
    = 46°
x= 46°
Part B:
120°
 
        
             
        
        
        
Y = kx is the direct variation equation, where 'k' is the constant of variation.
12 = 7(x)
Divide both sides by 7
12/7 = x