Asked by kheem
Cinema 2 has 25 seats in the first row and 30 rows in all. Each successive row contains one additional seat. How many seats are in the theater
Answers
Answered by
Reiny
so you want
25+26+.. for 30 terms
an arithmetic series where a=25 , d=1 ,and n=30
sum(3) = (30/2)(50 + 29(1)) = 1185
25+26+.. for 30 terms
an arithmetic series where a=25 , d=1 ,and n=30
sum(3) = (30/2)(50 + 29(1)) = 1185
Answered by
Anonymous
a1=25 d=1 n=30
sn=30/2{2(25)+(30-1)1}
sn=15(50+29)
sn=15(79)
sn=1,185 seats in the theatre
sn=30/2{2(25)+(30-1)1}
sn=15(50+29)
sn=15(79)
sn=1,185 seats in the theatre
Answered by
kim
A theater has 30 rows of seats. The first row contains 20 sets, the second row contains 21 seats, and so on, each row has one more seat than the previous one. How many seats are there in the theater?
Answered by
jemarose
A hall has 35 rows. Each successive row contains two additional seats. If the first row has 20 seats, how many seats are in the hall?
Answered by
juliua L. baclay
conference hall has 30 rows. Each successive row contains one additional seat. If the first row has 15 seats, how many seats are in the hall? *
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.