Answer:
Length = 11.25 and width = 3.75 inches.
Step-by-step explanation:
You must mean that the length is 3 times its width.
If the the width is x then the length is 3x inches.
Perimeter = 2*length + 2*width.
2(3x) + 2x = 30
6x + 2x = 30
8x = 30
x = 3.75.
3x = 11.25.
 
        
             
        
        
        
Answer: MARK BRAINLIEST
23x
Step-by-step explanation:
x^3+x^2+5x+5 = 23x
 
        
                    
             
        
        
        
It’s about -1.5555 I think
        
             
        
        
        
Answer:
X^2-2X+1=0
Step-by-step explanation:
given,2X-X^2=1
 or,-(X^2-2X)=1
 or,X^2-2X=-1
 or,X^2-2X+1=0 ,which is the req.equation in standard form.
 
        
                    
             
        
        
        
Answer: 439,824 ft
Step-by-step explanation: the | means it is equal to so there is one on 7ft so the one without a number will be 7ft 
Area is LxW 
so 7x6x8x11x17x7=439,824
not sure if it’s correct tho but i guess I helped