Match the parts of the following function with their correct definitions.
a(n) = a + (n - 1)d
1) a(n) a) common difference
2) a b) value of the nth term
3) n c) value of the first term
4) d d) number of the nth term

1) A(n) - B) value of the nth term; 2) a C) value of the first term; 3) n D) number of the nth term; and 4) d A) common difference

Step-by-step explanation:

In an arithmetic sequence, A(n) stands for the general, or nth, term.  a is the value of the first term; d is the common difference (what we add each time); and n is the term number (what we replace with a number to find the term we're after).

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.

i did it myself and i got 4.2 (b) hope its right

step-by-step explanation: