7h grade math question !

which of the following statements is equivalent to 10 + 6?
group of answer choices

2(5 + 3)

5(5 + 1)

2 + (8 + 4)

5(2 + 1)

answer:

a

step-by-step explanation:

5*2=10

2*3=6

10+6=16

answer: the first one. 2(5+3)

step-by-step explanation:

basically you multiply 2 by 5 and you get 10 add the plus sign 10+ now multiply 2 by 3 which is 6 and put it together 10+6

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.

irrational, cannot