poohbear2003z poohbear2003z
  • 03-10-2017
  • Mathematics
contestada

A rectangle with an area of 120 in 2 has a length 8 inches longer than two times its width. What is the width of the rectangle?

Respuesta :

musiclover10045
musiclover10045 musiclover10045
  • 03-10-2017

width = x

length = 2x+8

area = l x w

x(2x+8)=120

2x^2+8x−120=0

x^2+4−60=0

(x+10)(x−6)=0

x=−10 and x=6

 width has to be a positive number

Width = 6 inches.

Answer Link

Otras preguntas

What sorts of signals does the brain use to communicate sensations, thoughts and actions?
What is the main religion of Latin america
How did Alexander the Great rise to power and how did he spread Greek culture to other lands?
a soccer team played 160 games and won 65% of them. how many did they win?
Graph the line using intercepts: 4x-3y=12
Luke made a model that has 1 circular base and 1 curved surface.what solid figure did he make
There is an inverse relationship between x and y. If y is when x is 3, what is x when y is 9? 3 5
1.    How does the friction affect forward motion? Give an example. 2.    Describe two ways to change the frictional force between two solids surfaces. Change t
Morgan found a stone arrowhead. He measured it three times. He measured it as 2 inches to the nearest inch, to the nearest 1/2 inch, and to the nearest 1/4 inch
What is a group of organisms that look alike and can reproduce among their selfs ?