Question

A rectangular piece of cardboard has a width of x and a length of y. When 15

Answer 1

Answer:

Step-by-step explanation:

Initial length of the cardboard was y cm, and width was x cm.

The new dimensions are:

length = (y - 25) cm

width = (x - 15) cm

Area of the new rectangle = length x width

                                            =  (y - 25) x (x - 15)

                                            =  (y - 25) (x - 15) $cm^{2}$

Perimeter = 2 ( length + width)

                = 2 ((y - 25)  + (x - 15))

                = 2(y - 25) + 2(x - 15)

Therefore:

2(x + y) - 40 is neither of these

2(x - 15) + 2(y - 25) is the perimeter

(x - 15)(y - 25)  is the area

(x - 25)(y - 15) is neither of these

2(x - 15)(y - 25)  is neither of these

2x + 2y - 80 is the perimeter

xy - 375 is neither of these

x + y - 40 is neither of these