Width: x
Length: 3x
Perimeter=x+x+3x+3x=8x
8x=400
x=50
Dimension is 150×50 feet (length × width)
        
             
        
        
        
We need the rest of the question :)
        
             
        
        
        
Answer:
C
Step-by-step explanation:
the greater than or less then symbol means at least and $425 means it has to be added in each month.
 
        
                    
             
        
        
        
Answer:
Option D is correct.
 13x = 39
Step-by-step explanation:
The system of equation is given:
 ....[1]
             ....[1]
 .....[2]
         .....[2]
Multiply equation [1] by 5 to both sides we have;
 .....[3]
              .....[3]
Using elimination method:
Add [2] and [3] equations to eliminate y and solve for x, we have;

Divide both sides by 13 we get;
x = 3
Substitute x in [1] we have;
2(3)-y = -4
6-y = -4
Subtract 6 from both sides we have;
-y = -10
Divide both sides by -1 we have;
y = 10
⇒Solution: (3, 10)
Therefore, an equation can replace 3x+5y = 59 in the original system and still produce the same solution is, 
13x = 39
 
        
                    
             
        
        
        
Hey!
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Solution:
The ratio is FEMALES to MALES.
So its 18/16, 18:16, or 18 to 16.
~Now we need to simplify.
18:16 → 18/2:16/2 → 9:8
*Note* When you have a ratio you need to know which comes first. If you put males to females that incorrect. It has to be correct according to the question.
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Answer:

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Hope This Helped! Good Luck!