The night school graduation class of 2010 was 260 people. five years later the high school graduating class was 320 people. by approximately what percent did the high school graduating class change ?

Step-by-step explanation:

First you need to set up your proportion with your variable as the missing number.

The parts go on top and the wholes go on bottom.  

260 people    =       x %

320 people              100%  

solve from therepost if you need help I will check back in a few minutes.

i belive those are the ones that are under 90 degreese.

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.