Answer these 3 questions
1.
what is the length of the line segment with endpoints (−3,8) and (7, 8) ?
enter your answer in the box.
units

2. (the second picture is the second question)
what is the perimeter of the rectangle in the coordinate plane?

3. (the first picture is the third question)
what is the area of the triangle in the coordinate plane?

(no answer choices for second and third)

the 3rd option is right

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.