What is the measure of ∠ABC?
100 Points!

86 degrees.

Step-by-step explanation:

To solve the problem, you need to add the individual values of each angle together.

Angle ABD is 33 degrees.

Angle DBC is 53 degrees.

This means add 53 degrees and 33 degrees together, which equals 86 degrees, the value of the angle.

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.