Given qc midpoint v. if q is at (4,-11) and v is at (-9,1) what are the c coordinates

(-13,12)

Step-by-step explanation:

So, first, you make two separate equations.

4 + x = -9 (The 4 is from Q and the -9 is from V)

-11 + y = 1 (The -11 is from Q and the 1 is from V)

Then, you subtract 4 from both sides on the first one, and subtract -11 from both sides on the second one.

You should get:

x = -13

y = 12

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.