A simple answer is that any given trapezoid with height h and length of the parallel lines a and b, is half of a parallelogram with an area of (a+b) x h. Since the trapezoid is half of this, it is h(a+b)/2
 
        
             
        
        
        
Responder:
Por favor, consulte la explicación.
Explicación paso a paso:
Dado que :
Los mejores cargos por préstamos hipotecarios:
Interés mensual = 7%
Intereses pagados sobre capital de 100 pesos
Intereses pagados = principal * tasa de interés
Intereses pagados = 100 * 7%
Intereses pagados = 100 * 0.07
Intereses pagados = 7 pesos
De ahí que los intereses pagados por un préstamo de 100 pesos sean 7 pesos
 
        
             
        
        
        
Length (L): 2w + 3
width (w): w
border (b): 
Area (A) = (L + b) * (w + b)   <em>NOTE: This is assuming the width also has a border</em>
               = (2w + 3 + 
) * (w + 
)
               = 

               = 

               = 
 
        
             
        
        
        
Look at the coefficient of x², ignore the positive or negative sign. The larger the coefficient, the narrower the graph. 
in this case, the coefficients are -2, -1/2, -4, and 1/7
ignore the positive or negative sign, 4 is the largest number, so y=-4x² is the narrowest.
Note: the positive/negative sign tells you whether the graph opens upward or downward. It doesn't determine the width of the graph. 
        
             
        
        
        
Four hundred and eighty five million, two thousand.