A car is moving at a constant speed and travels 48 3/5 miles in 4/5 of an hour. How many miles will this car travel in three hours?

Step-by-step explanation:

A car is moving at a constant speed and travels 48 3/5 miles in 4/5 of an hour.How many miles will this car travel in three hours?

First we will look for exact rate

Since we moved

miles in

of an hour, let's look for how much we will move in one whole hour

So we would move 60.75 miles in one hour

To find three hours multiply 60.75 by 3

We would drive 182.25 miles in 3 hours

step-by-step :

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.