Check all of the expressions whose answers have more than 2 significant figures. You do not need to simplify the expressions.
O A. 200. 3.5
O B. 122.0 - 47.4
O C. 144. 4.1
O D. 7.893 + 10.1

PLEASEEE HELP

d forsyre mane just trust

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.