The river ridge high school auditorium has exactly 27 rows of seats. the rows are labeled, in order, from the front of the auditorium to the back from a through aa. there are 9 seats in the row a. each row after the first row has three more seats than the previous row. how many seats are there in row aa?

  87

Step-by-step explanation:

The numbers of seats in each row form an arithmetic sequence. The general term (an) of such a sequence is given in terms of the initial value (a1) and the common difference (d) as ...

  an = a1 + (n-1)·d

The 27th term of the sequence with first value 9 and common difference 3 is ...

  a27 = 9 + (27-1)·3 = 9 +78 = 87

There are 87 seats in row AA.

step-by-step explanation:

. your answer will contain x - and y -terms. (1 point) x ( ¿¿ 2 − 7 ) 2 +( y 2 − 9 ) 2 √ ¿ 12. what is the distance from the directrix (the crocodile river) to the point ( x , y )? write this equation. your answer will contain a y -term.

nope.   happens to me as well.

-aparri