I dont know the answers for these .Need help

123°, 57°, 123°

46°, 90°

Step-by-step explanation:

28. m∠L=57° ⇒ opposite angle  m∠J=m∠L=57°

m∠M= m∠K= 180° -m∠L= 180° - 57°= 123°

29. m∠W= m∠X= 90°

m∠Y= 180° -m∠W= 180° - 134°= 46°

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.

ruth is 6 years old

step-by-step explanation:

6 + 24 = 30,   so 6/30 = .2  

if you do 1/5 it also equals .2, so that is the answer.