A square and a rectangle have equal areas. The length of the rectangle is twice the length of the side of the square. The width of the rectangle is 2 centimeters shorter than the length of the side of the square. What is the length, in centimeters, of the side of the square?

4 cm

Step-by-step explanation:

x^2 = bh

b = 2x

h = x-2

x^2 = (2x)(x-2)

4^2=[2(4)][4-2]

16 = 16

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations: