Jackson would like to determine which elective is the favorite among his peers. He surveys every 20th person to walk through the front door of
school and finds that 27 out of 40 students like P. E. the best. If there are
800 students at the school, how many would you expect to say P. E.?

the answer is a) y= 2 csc [0.5 (x+pi/2)]-1

step-by-step explanation:

statement #3: proof- ang is congruent to ang ecd : angles are congruent.  

step-by-step explanation:

1: the missing angles in statement #3  

a.) acb  

reason- the reason why the answer is acb is because angle ecd and angle acb are both the same size *that's what the word congruent means this is really simple.  

2: the missing word in reason #3  

c.) vertical  

reason- the reason why the answer is vertical is because the angles in that diagram on figure 2 is slanted, which is vertical, and the e and a both lay on vertical lines. along with the other's, but e and a are the 2 main points you want to focus on. and c is kind of like your starting point, because c is for both angles, not just one.  

i hope that was and understanding.