college algebra

posted by .

A rectangular auditorium seats 1920 people. The number of seats in each row exceeds the number of rows by 8. Find the number of seats in each row.

  • college algebra -

    number of rows --- x
    number of seats per row --- x+8

    x(x+8) = 1920
    x^2 + 8x - 1920 = 0
    (x-40)(x+48)=0
    x = 40 or x = -48, which of course makes no sense

    there are 40 rows, and each row has 48 seats

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math

    Determine the seating capacity of an auditorium with 10 rows of seats if there are 10 seats in the first row, 16 seats in the second row, 22 seats in the third row, 28 seats in the forth row, and so on ?
  2. math

    An auditorium has 49 rows of seats. The first row contains 40 seats. As you move to the rear of the auditorium, each row has 3 more seats than the previous row. -How many seats are in the auditorium?
  3. Math

    An auditorium has 50 rows of seats. The first row has 20 seats, the second row has 21, the third row has 22 seats, and so on, each row having one more seat than the previous row. How many seats are there all together?
  4. Math

    an auditorium has 50 rows of seats. THe first row has 20 seats, the row has 21 seats, the third row has 22 seats, and so on. each row having one more seat than the previous row. How many seats are there all together?
  5. Discrete Mathematics

    Mathematical sequences can be used to model real life applications. Suppose you want to construct a movie theater in your town. The number of seats in each row can be modeled by the formula C_n = 16 + 4n, when n refers to the nth row, …
  6. Algebra II

    A rectangular auditorium seats 900 people. The number of seats in each row exceeds the number of rows by 11. Find the number of seats in each row.
  7. Math

    An auditorium has 30 rows of seats. It has 20 seats on the first row, 24 seats on the second row, 28 seats on the third row, and so on. 1. How many seats are there in the 20th row?
  8. Algebra

    A rectangular auditorium seats 1960 people. The number of seats in each row exceeds the number of rows by 9. Find the number of seats in each row. Thanks!
  9. Math

    An auditorium has 150 rows of seats. The first row has 15 seats, the second row has 17 seats, the third row has 19 seats, and so on, each row having two more seats than the previous row. How many seats are there together in the auditorium.
  10. Math

    One seat in an auditorium is broken. It is in the 3rd row from the front of the auditorium and in the 18th row from the back of the auditorium. There are 12 seats to its left and 17 seats to its right. If every row has the same number …

More Similar Questions