The length of a rectangke is equal to triple the width . if the perimeter is 8 centimeters . what is the length and the width of the rectangle

8 = 2(l + w)

l = 3w

Replace l in first equation with 3w.

8 = 2(3w + w)

Combine like terms.

8 = 2(4w)

Multiply.

8 = 8w

Divide both sides by 8.

w = 1

Replace the value of w with 1.

l = 3w

l = 3(1)

l = 3

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:

descending order means to order the polynomials from the term with the largest exponent to the term with the smallest exponent.  

therefore, the correct answer is d.