3. A rock falls from the top of a cliff to the ocean 100 feet below. The distance, S, the rock is from the ocean as it falls is represented by the function S(t) = -16% + 100,
where trepresents the number of seconds the rock has been falling. According to
this function, how long does it take the rock to hit the water?
2.0 seconds
2.5 seconds
5.0 seconds
6.3 seconds

13.46

step-by-step explanation:

16.80 x .20 = 13.46

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.