We know to find the perimeter we have to add the distance around the rectangle.The distance can also be sought as 2 times the length plus times the width.

So as a formula is like P = 2l + 2w where P is the perimeter.

We are given the perimeter so we can plot it into the formula and also plot in the length because it says the length is 3x -1

$2x^{2}$ +8x - 10 = 2(3x -1) + 2w Now we have to solve for w .Break it down

( $2x^{2}$ + 8x -10) = (6x -2 )+ 2w subtract 6x - 2 from both sides

( $2x^{2}$ + 8x -10) - (6x -2) = 2w

( $2x^{2}$ + 2x -8) = 2w now divide both sides by 2

$\frac{2x^{2} +2x-8 }{2} = w$ One the left side factor the numerator

$\frac{2(x^{2} +1x-4)}{2}$ = w Now multiply both sides by 2

w =( $x^{2}$ + 1x-4 )

The width is x^2 + 1x -4

4 0

3 years ago

What are the 3 consecutive even numbers that equal 132

gizmo_the_mogwai [7]

Answer:

three consecutive even integers be n-2,n and n+2. n=44. The three consecutive even integers are 42,44 and 46

Step-by-step explanation:

3 0

3 years ago