You have prizes to reveall
)) Does the point (8, 9) satisfy the equation y = x?

no

Step-by-step explanation:

if y=x, then the for the x value of 8, the y value should be 8. but in this case it is 9, so it is not.

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.

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225