Answer:
Length: 5 ft; width: 4 ft.
Step-by-step explanation:
A = LW     formula for area of rectangle
(2x + 1)(2x) = 20      substitute length, width, and area into formula
4x² + 2x - 20 = 0      use the distributive property to multiply out left side
2x² + x - 10 = 0         divide both sides of equation by 2
(2x + 5)(x - 2) = 0        factor out trinomial
2x + 5 = 0  or  x - 2 = 0        use zero product rule to solve for x
2x = -5  or x = 2       subtract 5 from both sides; add 2 to both sides
x = -5/2  or  x = 2
We discard x = -5/2 since it would give negative length and width, and the length and width cannot be negative.
Length: 2x + 1 = 2(2) + 1 = 5
Width: 2x = 2(2) = 4
Length: 5 ft; width: 4 ft.
 
        
             
        
        
        
There will be 10 commercials if one hundred songs
        
             
        
        
        
For this case we have to take into account the following conversions:
 
 Let's first transform the expression to miles per seconds squared: 

 Then, we transform the result to miles per minute squared.
 We have then: 
 Answer:
 Answer:
 the rate in miles/min^2 is:
  
 
        
        
        
<span>Semicircle area = circle area / 2 = (pi*r^2)/2
16 in is the radius. Let's call the area of this semicircle s.
3.14*16^2=s
</span><span>Trapezoid area = ((base 1 + base 2) / 2) * h
Here, base 1 is 44 and base 2 is 36. The height (h) is 20. Let's call this trapezoid's area t.
(44+36)/2 *20 = t
</span>
<span>We can remove the area of the semicircle (that created by the windshield wiper) by subtracting it from the area of the trapezoid.
t - s = uncleaned area
[(44+36)/2 * 20] - [3.14 * 16^2] = uncleaned area</span>
        
                    
             
        
        
        
12.25x + 8.75y > = 90 (thats greater then or equal) <== ur inequality