Plz answer my question i will give 100 point and brainliest please Set up equations and solve them to find the unknown numbers in the following cases:
Agnes thinks of a number. If she adds 19 to it and divides the sum by 5, she
will get 8.

The missing number is 21

Step-by-step explanation:

21 + 19 = 40

40 ÷ 5 = 8

Step-by-step explanation:

Let the number is x.

We have equation:

Solve for x:

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.