A 21°
B 42°
C 639
D1260

D) 126°

Step-by-step explanation:

<G=84

<D=x

<E=180-3x

added all together should equal 180

84+x+180-3x=180

-2x=180-264

-2x=-84

x=42

<FEG=3x=3(42)=126

a) one student is chosen from classroom a, then a student is chosen from classroom b.  

step-by-step explanation:

independent events are ones in which the probability of one event does not affect the probability of the second event.

one student is chosen from classroom a; this does not affect the chances of choosing a student from classroom b.   this makes these independent events.

when one card is chosen from a standard deck and then set aside before a second card is chosen, the probability of the second card being chosen changes.   this makes them dependent events.

when one student is chosen from classroom a and then a second student is chosen from classroom a, the probability of choosing the second student changes.   this makes them dependent events.

when a letter is chosen from the alphabet and then a second letter is chosen, the probability of choosing the second letter changes.   this makes them dependent events.

europa2433

europa2433

step-by-step explanation: