Ellis's backyard has a 6.25 m by 6.25 m patio. She would like to build a 1.5 m wide extension around 3 sides of the patio, as the figure shows. She will buy 0.25 m by 0.25 m tiles that come 25 to a package.
patio
extension
How many packages does Ellis need to buy to build the extension?
packages

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.

no idea

step-by-step explanation:

b

step-by-step explanation:

i suppose it should be (y=2x-5)

step-by-step explanation: