bethyboop8397 bethyboop8397
  • 21-02-2018
  • Mathematics
contestada

The length of a rectangle is three more than twice the width. determine the dimensions that will give a total area of 27m^2

Respuesta :

sqdancefan
sqdancefan sqdancefan
  • 21-02-2018
If x represents the width of the rectangle, then the length is 3+2x, and the total area is
.. A = W*L
.. 27 = x*(3 +2x)
.. 2x^2 +3x -27 = 0
.. (2x +9)(x -3) = 0
.. x = {-4.5, 3} . . . . . . . . . . width, only the positive answer is of interest
.. 3 +2x = 3 +2*3 = 9 . . . . .this is the length

The rectangle is 3 m by 9 m.
Ver imagen sqdancefan
Answer Link

Otras preguntas

jerry has $115 in his savings account and $65 dollars in his checking account If Jerry deposits $20 to his savings account each week and $45 to his checking acc
for the battle of saratoga​
Please tell me the answers to A, B, and C
How do you do this question?
Find Sin x and Tan x if Cos x=2/3 and Cot x >0. Evaluate without using calculator.​
Give 2 application of a machine.​
Choose a famous makeup artist from film or theater. Write at least three paragraphs on the makeup artist work and accomplishments. What techniques did the arti
Helppppppp lol idk what I’m doing
The straight line 4x+5y-20 = 0 cuts the X-intercept, Y-intercept and hence find area of traingleAOB​
Given f (x) = 3x - 6 and g (x) = 2x² 1. Find: f (g (x))2. Evaluate: f ( g ( -2))PLEASE HELP ASAP!