What expression is equivalent to 12r-5

(24r-10)/2

Step-by-step explanation:

12r-5 Lets multiply everything by 2 since we are given nothing to simplify

24r-10 now we have to make it equivalent to 12r-5

So all we will do is put it in a fraction bar

24r-10 is the numerator and 2 is the denominator

So the final result is: (24r-10)/2

answer a & b

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.