CL fi xi fixi X ( Xi –X ) ( Xi –X )2 fi( Xi –X )2 10 – 15 8 12.5 100 20.1 - 7.6 57.76 462.08

16 - 21 10 18.5 185 20.1 - 1.6 2.56 25.6

22 - 27 8 24.5 196 20.1 4.4 19.36 154.88

28 - 33 4 30.5 122 20.1 10.4 108.16 432.64

n = 30 ∑ =603 ∑ 1075.2

What is the Mean of this given grouped data ?
(Use up to one decimal place in writing your answer).

a 360 degree rotation

step-by-step explanation:

a

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.