Three friends all have same ages that are consecutive integers. the sum of their ages is 57. what is the age of the oldest friend?

a) 19 yr old
b) 18 yrs old
c) 21 yrs old
d) 20 yrs old

70,000 + 6,000 + 800 + 30

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.

hreryryrranswer:

step-by-step explanation:

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