2. Choose the correct term: Theis the decrease from theoriginai price of an item to its sale price

2. Choose the correct term: The is the decrease from the
originai price of an item to its sale price

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  1. 1)The dimensions you  are solving for

    length of the rectangular room

    width of the rectangular room

    2)Now let the length be L and the width be w then

    the perimeter is 2L+2W

    2L+ 2W  = 24(1)

    Also, "Twice the length decreased by three times the width is 4 feet" can be written as

    2L - 3W = 4(2)

    Solving (1) and (2) by elimination method, by subtraction

    2L+ 2W  = 24

    2L - 3W = 4

    (-)    (-)       (-)

    0L  +5W = 20

    5W = 20

    W = 4(3)

    Now by substitution method,substituting (3) in(1)

    2L+ 2(4)  = 24

    2L + 8 = 24

    2L = 24 -8

    2L = 16

    L = 8

    Substituting in the original equation and rechecking the perimeter

    =2(8) + 2(4)

    =16 + 8

    = 24

    Thus the found dimensions are correct

    3)The length of the room is 8 feet and the width of the room is 4 feet.

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