Do sat coaching classes work? do they students to improve their test scores? four students were selected randomly from all of the students that completed an sat coaching class. for each student, we recorded their first sat score (before the class) and their second sat score (after the coaching class).  student      12  34first sat score920830960910second sat score10108001000980for a two-sample t test using these data, what is the approximate value of the test statistic t?

step-by-step explanation:

; fx

15: 24

62.5%

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.

y=20x

: )

hope this