Find the perimeter of a rectangle when it’s length is three times it’s width and the area is 108

Step-by-step explanation:

Let w = width

Then 3w = length

A= LW

108 = (3w)(w)

108 = 3w2

36 = w2

6 = w   18 = length  Perimeter = 2(6) + 2(18) = 48 in

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:

a; x = 0.5

step-by-step explanation:

-10x = -5

x = 0.5