Your job is to sort and snacks marbles for sale. a bag contains 55 marbles, some red and some green. if there are 11 red marbles, what is the ratio of red and green marbles? a.1: 4 b.1: 5 c.4: 1 d.5: 1

Total number of marbles = 55

Red marbles = 11

Green marbles = (55-11) = 44

Ratio of red to green marbles

=11 : 44 = 1 : 4

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.