HELP HELP HELP HELP HELP The length of the adjoining rectangular park is two times its
breadth. The cost of constructing two crossing paths running
across the middle of the park at Rs 20 per sq. m is Rs 9000. If the
cost of plastering the shaded portion of the park at Rs 35 per sq. m
is Rs 315, find the cost of growing grasses in the empty spaces at
arge for
er in a
ge.
its of
d the
Rs 12 per sq. metre,

the 4th choice is the correct one

step-by-step explanation:

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.

yes

step-by-step explanation:

they have to be opposite and reciprocal of eachother.