39. The area of a triangle A varies jointly as b and h. If A = 225 in- when b = 18 in. and h = 25 in., find A when b = 35 in. and h = 40 in.
37

i'm not sure i quite understand, could you provide more information?

the f

last graph i believe

step-by-step explanation:

worked it out i believe

the equivalent expression are always the hardest ones but you look at the gcf also

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.