Ernestina compro 1 4/7 metros de tela azul y 2 1/3 de tela verde ¿ cuantos metros compro en total?

Respuesta: 3 19/21 metros

Explicación paso a paso:

Dado que :

Metros de tela azul comprados = 1 4/7 metros

Metros de tela verde comprada = 2 1/3 metros

Metros de tela comprados en total:

Suma de metros de tela azul y verde;

(metros de tela azul + metros de tela verde)

(1 4/7) + (2 1/3)

11/7 + 7/3

L.C.M de 7 y 3 = 21

(33 + 49) / 21

= 82/21

= 3 19/21 metros

solution:

the given function is ,

      =

the three roots of this quadratic function is , 0 ,8 and 10.all the roots are real and rational.

if a quadratic equation is of the form ,

sum of the roots = a + b +c= 0+8+10=18=  

product of roots taken two at a time = a b + b c+ c a = 0+80+0=80 =  

product of roots = a b c = 0=  

there are 11 doors in a hall starting from 0 to 11.the entry in the hall is permitted through gate number 0 and exit is allowed through only gate number 8 and 10.so, three roots(0,8,10) of quadratic function is given by entry and exit route of this hall.