Tommy has a rectangular rug with an area of 21 square feet. The rug is four feet longer than it is wide. Create an equation that can be used to find the length and width of the rug. A. 21=LW

B. 21=(w+4)w

C. 21=(w+4)(w-4)

D. 21=(w-4)w

step-by-step explanation: h: (- 3, 6)

m: (1, - 2)

o: (7, 6)

r: (- 9, - 2)

midpoint of hm: (- 1, 2)

midpoint of or: (- 1, 2)

therefore, b is the midpoint of both diagonals bisect each other !

to prove the diagonals are perpendicular, show that the product of the slopes = - 1

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.