firesoccer5200 firesoccer5200
  • 23-02-2018
  • Mathematics
contestada

Find the dimensions of a rectangle whose area is 221 cm2 and whose perimeter is 60 cm. (enter your answers as a comma-separated list.)

Respuesta :

realtreegirl313
realtreegirl313 realtreegirl313
  • 23-02-2018
60 = 2 ( length + width ) 

30 = length + width 

Let length be = x and width = y 

x+y = 30 

xy = 209 

4xy = 836 

( x+ y)^2 = 900 

( x+y)^2 - 4xy = 900-836 = 64 

( x-y)^2 = 64 

x- y = 8 

x+y = 30 

ADD 2x =38 

x = 19 

y = 11 

ANSWER 19cm X 11cm
Answer Link

Otras preguntas

a summary of sisterhood of the traveling pants
what piece of eye equipment do you need to enjoy the great barrier reef
write the sum of the numbers as the product of their greatest common factor and another sum.
What is the purpose of finding the slope of a line? A. to add up all the variables B. to measure the rate of change C. to balance out undefined relationships D.
The mass of a solid is 3.60 grams and it's volume is 1.8 cubic centimeters. What is the density of the solid expressed to the correct number of significant numb
what's 2314572763 7156134563.
which key can you press to access the excel help window? f1 f8 ctrl tab
how should parents approach talking to their children about difficult social issues?
of the two scissorses, the kitchen pair was the one martha always preferred. a. scissors b. scissorers c. scizzors d. correct as is
a wolf packs hunts , kills and feeds on a moose. in this interaction the wolves are a. hosts b. prey c. mutualists d. predators