You are bidding on a job to maintain the local soccer fields in a community park. There are 8 fields that need to have their grass mowed weekly. The fields are 80 yards by 120 yards. The riding lawn mower you have has a 2.5 feet cutting width and an average of 3.5 miles per hour speed with regular use.

answer: the common difference is -0.10

just take the area of the square and then the area of the circle then subtract the circle area from the squares area

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.