Nico practiced the drums 1.5 fewer hours than he practiced the piano.
Part A
If Nico practiced the piano for 4 hours, how many hours did Nico practice the drums? Enter the answer___ in the box.
hours |___|
Part B
If Nico practiced the piano for h hours, which expression represents the number of hours he practiced the drums?
A. 1.5+h
B. h - 1.5
C. 1.5- h

i pretty sure it is

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.