awesomepanda1
awesomepanda1 awesomepanda1
  • 19-08-2017
  • Mathematics
contestada

A rooms length is 3 feet less than twice it's width. The area of the room is 135 square feet. What are the rooms dimensions?

Respuesta :

texaschic101
texaschic101 texaschic101
  • 19-08-2017
A = L * W
A = 135
L = 2W - 3

135 = W(2W - 3)
135 = 2W^2 - 3W
-2W^2 + 3W + 135 = 0
(-2W - 15)(W - 9) = 0

-2W - 15 = 0
-2W = 15
W = -15/2....not this one because it is negative

W - 9 = 0
W = 9 <=== the width is 9 ft

L = 2W - 3
L = 2(9) - 3
L = 18 - 3
L = 15 <=== length is 15 ft


Answer Link

Otras preguntas

For a market to be competitive:a. each buyer and seller is small, relative to the whole market; no single decision-maker has any influence over the market price
There are certain modes of governing the people which will succeed. There are others which will not. The idea of consolidation is abhorrent to the people of thi
Match the terms to their definition. 1. dispersion a data value that is far from the others 2. inter-quartile range how data is distributed 3. lower quarti
What is biodiversity?
What is the length of AC? Round to the nearest tenth. The equation sin(40°) = can be used to determine the length of line segment AC. 11.8 12.9 cm 14.9 cm 15.3
which consumers live in the open ocean
Which of the following types of energy does an object have because of its motion? Chemical energy Gravitational energy Kinetic energy Potential energy
Please I need help answering this my grade depends on it!!
Helppppppppppppppppp
What is the primary requirement for a molecule to be analyzed by Gas Chromatography? a) The molecule can be converted to a gas in the GC b) The molecule has a