Arectangular field has an area of 1452 square feet. if the width is three times greater than the length, what is the length of the field

The length of the rectangular field is 22 feets.

Step-by-step explanation:

Let us write for the width and for the length.

From the data we know that .

By the formula of the area of a rectangle . Then, substituting into the formula for the area: .

So, we have the equation , which is equivalent to . Then, taking square roots in both sides: , but as we are looking for a measure we discard the negative solution. Therefore, feets.

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: