Drag the tiles to the boxes to form correct pairs. Match the pairs of equivalent expressions.

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(5+2b)+(2b+3/2)     4b+13/2

(-14+3/2b)-(1+8/2b)      -15 - 5/2b

(-10 + b)+(7b -5)               8b - 15

(7/2b - 3)-(8 + 6b)        -5/2b - 11

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.

answer: b.

step-by-step explanation:

the y coordinate for point b is 0, and answer b is the only one with that y coordinate.