Atriangle has angle measures in the ratio of 1: 2: 3. what is the measure of each angle of the triangle? show your work.

30,60 and 90

Step-by-step explanation:

1:2:3, Each angle is x respectively

1x+2x+3x=180<Equation (angles in a triangle add up to 180)

6x=180

x=30<Solved equation

Now we substitute into the ratio's 1:2:3

30 x 1=30

30 x 2=60

30 x 3=90

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.