What is the value of y?
3(13) + 2y = 9
+
==

Step-by-step explanation:

3(13/2) - 2y = 9

39/2 - 2y = 9

39 - 4y/2 = 9

39 - 4y = 9 × 2

39 - 4y = 18

-4y = 18 - 39

-4y = -21

y = -21/-4

y = 21/4

Option B is correct

y = - 21 / 4

. ...

step-by-step explanation:

hunhgunyt7 in u uuuhiuteu

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.