Prep - 6th Grade
4. The classroom is 8 yards long. What is the
length in inches?
A. 8 inches
B. 96 inches
C. 288 inches
D. 64 inches

C

Step-by-step explanation:

1 yard=3 feet.

1 foot= 12 inches.

So,

1 yard=36 inches.

36×8=288

C IS CORRECT

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.