Sunday

April 20, 2014

April 20, 2014

Posted by **Jeannie** on Sunday, February 24, 2013 at 5:48pm.

- Algebra II -
**Lena**, Sunday, February 24, 2013 at 6:26pmTotal # of seats = 900

# of rows = R

# of seats = S

So according to the question, if we have R rows then we have R+11 seats

Total # of seats = # of rows * # of seats/row

900 = R * (R+11)

900 = R^2 + 11R

0 = R^2 + 11R -900

0 = (R+36)(R-25)

Therefore, you must have 25 rows with 36 seats in each row. We can't use -36 rows because it does not give us a realistic answer.

- Algebra II -
**Lena**, Sunday, February 24, 2013 at 6:28pmEssentially we've created a quadratic equation and we're solving it using factoring. If you don't understand how I solved this question, I can expand on my thinking. Let me know if it makes sense.

**Related Questions**

math - This is an SAT prep question: There are 8 sections of seats in an ...

math - An auditorium has 49 rows of seats. The first row contains 40 seats. As ...

Math(help) - when 120 guests take seat in an auditorium,only 34 of the seats ...

Math - An auditorium has 50 rows of seats. The first row has 20 seats, the ...

Math(help) - when 120 guests take seat in an auditorium,only 34 of the seats ...

math- Algebra 2 - An auditorium has 49 rows of seats. The first row contains 40 ...

math - another type of percents im havin trouble with, i know im close to ...

math - another type of percents im havin trouble with, i know im close to ...

ALGEBRA - Part B. Each auditorium has both floor seats and balcony seats. ...

algebra - Part B. Each auditorium has both floor seats and balcony seats. ...