Answer:
80 yd^2
Step-by-step explanation:
Since the formula for squares is s^2, we can use this to set up an equation, which is
s^2=400
If we square root this, we get
s=20
The perimeter formula for a square is 4s, so if we plug in, we end up with 80 yd^2
 
        
             
        
        
        
ok thanks for letting me know you need help
 
        
             
        
        
        
Answer:   The length of the rectangle is 35 in.
                 The width of the rectangle is 28 in.
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Explanation:
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The formula for the area, "A", of a rectangle:
Area (A) = length (L) * width (w) ; 
 
  that is:   "  A  =  L  *  w  "  ;
A = 980 in²  (given); 
ratio of the length to the width is:  " 5 : 4 " (given); 
→   Find the length (L) and the width (w).
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→  980 in²  =  (5x) * (4x) ; 
in which:  " 980 in² " is the area of the triangle; 
                 " 5x" = the length (L) of the rectangle, for which we shall solve; 
                 " 4x" = the width (w) of the rectangle, for which we shall solve.
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If we find solve for "x" ; we can solve for  "5x" and "4x" (the "length" and the "width", respectively);  by plugging in the solved value for "x" ; 
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   →  980 in²  =  (5x) * (4x) ; 
   ↔   (5x) * (4x) = 980 in²  ; 
   →   (5x) * (4x) = (5) * (4) * (x) * (x)  = 20 * x² = 20x² ;
   →  20x²  =  980 ; 
Divide each side by "10" ; by canceling out a "0" on each side of the equation:
   →  2x² = 98 ; 
Now, divide each side of the equation by "2" ;
   → 2x² / 2  =  98 / 2 ; 
to get:  
→  x² = 49 ; 
Now, take the "positive square root" of each side of the equation;  (since a "length or width" cannot be a "negative value") ; 
    to isolate "x" on one side of the equation; & to solve for "x" ; 
→  ⁺√(x²) = √49 ; 
to get:
→  x = 7 ;
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Now, we can solve for the "length" and the "width" ; 
→  The length is:  "5x" ;   
     5x = 5(7) =  " 35 in " ; 
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→  The width is:  "4x" ; 
     4x =  4(7) =  "28 in."
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Let us check our answer:
    →  A = L * w ; 
    →  980 in² = ?  35 in. * 28 in. ?? ; 
   Using a calculator:  "35 * 28 = 980" .  Yes!   ; 
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 { Also note:  " in * in = in² " ?  Yes! } .
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Answer:
 g(-2) = -15, g(0) = -9, g(3) = -18
Step-by-step explanation:
g(-2) = -2*2 + 3(-2) - 5 g(-2) = -4 - 6 - 5g(-2) = -15g(0) = -4 - 0 - 5g(0) = -9g(3) = -4 - 3(3) - 5g(3) = -4 - 9 - 5g(3) = -18
I HOPE THIS HELPS 
 
        
             
        
        
        
25.00+15.00x
this is your answer yes i know it is beautiful and amazing but hold the applause please