a rectangle with a width of (2x+5) feet and a length of (3x-1) has an area of 250 square feet what is the rectangles width

Respuesta :

Greetings!

Answer:

The width is [tex]\frac{17}{3}[/tex]

Step-by-step explanation:

First, we need to find the value of x.

To do this we need to multiply the two equations of the line because (length x width = area)

(2x + 5) (3x - 1)

Multiply out:

6x² -2x + 15x - 5

Simplified:

6x² +13x - 5

Factorise into two brackets:

(2x+5)(3x-1) = 0

x = [tex]\frac{-5}{2}[/tex] or x = [tex]\frac{1}{3}[/tex]

X has to be one third because it cannot be -2.5 because you cannot have a negative measurement.

Because the equation of the width is 2x + 5 simply plug the value of x into this:

[tex]2(\frac{1}{3}) + 5[/tex]

= [tex]\frac{17}{3}[/tex]

So the rectangles width is [tex]\frac{17}{3}[/tex] feet

Hope this helps!