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2) A two-word phrase in a word problem that is a key word for subtraction.
4) A word used to show multiplication in a word problem.
7) A word that means something has been added.
8) A phrase in a word problem that tells you to subtract.
9) This is characterized by the symbol <, and is always read from left to right.
10) A word or phrase used to show division in a word problem.
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1) A verbal phrase in a word problem that is a key word for subtraction.
3) A two-word phrase in a word problem that means to add.
5) A mathematical term that does not include an equal or inequality sign is called an _ _ _ _ _ _ _ _ _ _.
6) A verbal phrase in a word problem that means to add.
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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.

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