Yo fellows i need help plz and ty

150 cm

Step-by-step explanation:

The ratio of the entire door is 84:210 which is 2/5 so

60 is 2/5 of the length of the window

double 60 which is 120 which is 4/5

then half 60 which is 30

then add 120+30= 150 which is 5/5

150 cm

Another method is doing the bottom 60:84 which is 5/7

210/7= 30 so every 1/7 is 30

30*5= 150

150 cm

i would pic false cause it goes down towards negative

step-by-step explanation:

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.