What is the width of a rectangle with a length of 40cm and a perimeter of 91cm?

width = 5.5 cm

Step-by-step explanation:

The perimeter (P) of a rectangle is calculated as

P = 2l + 2w ( l is the length and w the width )

Here P = 91 and l = 40 , thus

91 = 2(40) + 2w = 80 + 2w ( subtract 80 from both sides )

11 = 2w ( divide both sides by 2 )

5.5 = w

Thus width is 5.5 cm

answer: okw

step-by-step explanation:

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: