math (plz help)

posted by .

Ms. Sue has not answered this question where all work must be shown. Plz, Ms. Sue do not answer this one again. Let someone else help me...plz.

In a movie theater, Theater A has 30 seats in the first row. Each row has 4 more seats in it than the previous row has.

1) How many seats are in the 4th row?

2) Is there a row with exactly 60 seats in it?

3) Theater B has 40 seats in the first row and each row has 4 more seats than the previous row. If both Theater A and Theater B has 25 row, how many more seats does Theater B have in it than Theater A?

All work must be shown in order to get credit...thanks.

  • math (plz help) -

    We will be happy to critique your work.

  • math (plz help) -

    1)

    Numbers of seats in rows in Theater A:

    RA=FA+(n-1)*4

    FA=Numbers of seats in first row=30

    n-number of row

    RA=30+(n-1)*4

    first row has 30 seats

    second row has:
    30+(2-1)*4=30+1*4=30+4=34 seats

    third row has:
    30+(3-1)*4= 30+2*4=30+8=38 seats

    fourth row has:
    30+(4-1)*4=30+3*4=30+12=42 seats

    2)
    Numbers of seats in rows in Theater A:

    RA=FA+(n-1)*4

    FA=Numbers of seats in first row=30

    n-number of row

    RA=30+(n-1)*4

    first row has 30 seats

    second row has:
    30+(2-1)*4=30+1*4=30+4=34 seats

    third row has:
    30+(3-1)*4= 30+2*4=30+8=38 seats

    fourth row has:
    30+(4-1)*4=30+3*4=30+12=42 seats

    fifth row has:
    30+(5-1)*4=30+4*4=30+16=46 seats

    sixth row has:
    30+(6-1)*4=30+5*4=30+20=50 seats

    seventh row has:
    30+(7-1)*4=30+6*4=30+24=54 seats

    eighth row has:
    30+(8-1)*4=30+7*4=30+28=58 seats

    ninth row has:
    30+(9-1)*4=30+8*4=30+32=62 seats

    tenth row has:
    30+(10-1)*4=30+9*4=30+36=66 seats

    Is there a row with exactly 60 seats in it? NO

    3)

    In Teater B first row has 40 seats,and each row has 4 more seats in it than the previous row has.

    In Teater B first row has 30 seats,and each row has 4 more seats in it than the previous row has.


    40-30=10

    That means that each row in theatre B has 10 seats more then row in Theatre A.

    If both Theaters has 25 rows.

    Difference between numbers of seats in Theater A and Theater B is:

    25*10=250 seats

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. English

    Posted by John on Thursday, December 18, 2008 at 9:21pm. We see a movie at a movie theater. We see a play at a theater such as the Joe's theater. Can you see a movie at a theater?
  2. math

    In a movie theater, theater A has 30 seats in the first row. Each next row has 4 more seats in it than in the previous row has. 1) How many seats are in the 4th row?
  3. math

    In a movie theater, Theater A has 30 seats in the first row. Each next row has 4 more seats in it than the previous row has. 1) How many seats are in the 4th row?
  4. math (plz help)

    In a movie theater, theater A has 30 seats in the first row. Each next row has 4 more seats in it than the previous row has. 1) How many seats are in the 4th row?
  5. Ms.Sue (ONLY)

    can you plz help me in science? PLZ HELP ME! YOU HELP ALL THE TIME! *begs* plz help! i am my knees!!!!! (really i am!) its called "science 8th grade"
  6. LIVING ENVIRONMENT

    the ability to grow in size is a characteristic of living organism .Although an icicle may grow in size over time,it is considered nonliving because there is 1)an incerase in matter ,but no increase in the number of icicle. 2)an interaction …
  7. math

    a movie theater has 250 seats. One hundred tickets have been sold. What percent of fhe theater is filled?
  8. math

    the movie theater had 52 more occupied seats than empty seats. there are a total of 320 seats in the theater. How many seats were occupied?
  9. math arithmetic sequence and series

    A theater has 30 seats in the first row, 33 seats in the second row, 36 seats in the third row, and so on in the same increasing pattern. If the theater has 15 rows of seats, how many seats are in the theater?
  10. math

    The movie theater has 48 rows of seats with 12 seats in each row. If every seat is full, how many people are at the theater?

More Similar Questions