Gina has 21 more barrttes than Holly.
The equation g=21+h, where 'g' represents the number of barrettes Gina has, and 'h' represents the number of barrettes Holly has, shows this relationship. If Gina has 50 barrettes, how many barrettes does Holly have?

.

step-by-step explanation:

idek

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.

i think the answer is b