Will mark first and correct answer brainliest:)

x=19

Step-by-step explanation:

add together (8x-7) and (x+16) and set them equal to 180 because they are supplementary

and solve for x using your new equation

a reflection across the x-axis , followed by the by a reflection across the y-axis , and then a scale dilation of 0.5 .

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.