Check here for instructional material to complete this problem. Find u if u = [x•P(x)]. Then, find o if o2 = {[x2.P(x)] – u2.
=
Х
P(x)
0
0.1804
0.3685 0.3016
3
0.1229
4
0.0251
5
0.0021
(Simplify your answer. Round to four decimal places as needed.)
=
(Simplify your answer. Round to four decimal places as needed.)

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tip $2.90

total $17.40

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.