An outdoor racetrack is shaped like an ellipse. the equation of the outer lane is x2/6562 + y2/1444 . each lane is approximately 1 meter apart. find the length and width of the inner lane, as indicated in the figure. assume that the center is located at (0,0) , that the track is a horizontal ellipse, and that one meter is equivalent to one coordinate unit. a. length = 81 m width = 38 m b. length = 158 m width = 72 m c. length = 160 m width = 74 m d. length = 162 m width = 76 m

answer: '

the distance between points l and m

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.

y=-2.5x+12.5

step-by-step explanation:

5y=2x+10

y=0.4x+2

slope=-2.5

5=-2.5*3+b

b=12.5