How much time will it take a car travelling at 88km/hr(55mi/hr) to travel 500km? show work

5 15/22  hours

5.6818 hours

Step-by-step explanation:

Distance is equal to the rate times the time

D = rt

We know the rate = 88 km/hr and the distance = 500 km

Substitute these in

500 = 88 *t

Divide each side by 88

500/88 = 88t/88

5 15/22  hours

5.6818 hours

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.