K is a point on segment JL. If JK = 5.6 and KL = 8.4, what is JL?

JL = 14

Step-by-step explanation:

JL = JK + KL = 5.6 + 8.4 = 14

14

Step-by-step explanation:

JL = JK + KL

    = 5.6 + 8.4

    = 14.0 = 14

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.