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Nina
Nina asked in Science & MathematicsMathematics · 6 years ago

Can I get some help with PROBLEMS INVOLVING QUADRATIC EQUATIONS?

You are hired to arrange 120 seats and to divide the areangement into 3 sets such as left, center, and right seating in the AVR Theater. In each set, the number of seats in each row is 3 less than the number of rows. You are to find the number of rows and number of seats in each row.

1 Answer

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  • ?
    Lv 7
    6 years ago

    40 = r(r-3)

    r^2-3r-40 = 0

    (r-8)(r+5) = 0

    3 Sets with

    8 Rows with 5 seats in each row.

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