Asked by Ali
Solve this problem plz...
A rectangle has an area of 288 cm square.if the width is decreased by 1cm and length is increased by 1 cm the area would decreasedby 3 cm square.fin the original dimension of the rectangle.
A rectangle has an area of 288 cm square.if the width is decreased by 1cm and length is increased by 1 cm the area would decreasedby 3 cm square.fin the original dimension of the rectangle.
Answers
Answered by
Steve
just write what they give you:
xy = 288
(x-1)(y+1) = xy-3
Now just solve for x and y, and you have 16 by 18.
Or, just list the factors of 288 and 285:
9x32, 12x24, 16x18
3x95, 5x57, 15x19
and it's easy to see which pairs work.
xy = 288
(x-1)(y+1) = xy-3
Now just solve for x and y, and you have 16 by 18.
Or, just list the factors of 288 and 285:
9x32, 12x24, 16x18
3x95, 5x57, 15x19
and it's easy to see which pairs work.
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