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countonme123
 2 years ago
The perimeter of a rectangle field is 60 meters. Its area is 200 square meters. Find its dimensions.
countonme123
 2 years ago
The perimeter of a rectangle field is 60 meters. Its area is 200 square meters. Find its dimensions.

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countonme123
 2 years ago
Best ResponseYou've already chosen the best response.1Please explain each step. I am having trouble here. :(

countonme123
 2 years ago
Best ResponseYou've already chosen the best response.1come on guys there has to be at least one nerd here. lol

nenadmatematika
 2 years ago
Best ResponseYou've already chosen the best response.1dw:1340060211664:dw

nenadmatematika
 2 years ago
Best ResponseYou've already chosen the best response.1so you'll have to solve this system. From the second equation b=30a so plug it back into the first equation and you'll get this equation:dw:1340060339958:dw

nenadmatematika
 2 years ago
Best ResponseYou've already chosen the best response.1so your rectangle field has sides a=10 b=20 or a=20 b=10

nenadmatematika
 2 years ago
Best ResponseYou've already chosen the best response.1do you understand this?

countonme123
 2 years ago
Best ResponseYou've already chosen the best response.1ah so its that parenthese trick thing again where you multiply them and it equal a complicated equation? I think i get it

nenadmatematika
 2 years ago
Best ResponseYou've already chosen the best response.1haha :D OK...you can think of it in that way...the basics are to know the formulas for area and perimeter of rectangle...then just to combine those two...I hope I helped you :D

countonme123
 2 years ago
Best ResponseYou've already chosen the best response.1the only part i dont get is why you changed the 60 to 30

nenadmatematika
 2 years ago
Best ResponseYou've already chosen the best response.1formula for the perimeter is 2(a+b) where a and b are lengths of sides...you have its value 60...so a+b=60/2=30...get it? :D

countonme123
 2 years ago
Best ResponseYou've already chosen the best response.1ok got that ok what about the term you added after that?

nenadmatematika
 2 years ago
Best ResponseYou've already chosen the best response.1a+b=30, so you can express one side by using the other side,so a=30b....that's the connection between those two sides...so I plugged back 30b instead of a in the first equation...that's how I got the quadratic equation which gives you the exact solution....

countonme123
 2 years ago
Best ResponseYou've already chosen the best response.1hmmm, I still don't get why you added the term a^2

nenadmatematika
 2 years ago
Best ResponseYou've already chosen the best response.1how would you multiply a*(30a)?

countonme123
 2 years ago
Best ResponseYou've already chosen the best response.1why would you multiplay it by a? a^2  30a

countonme123
 2 years ago
Best ResponseYou've already chosen the best response.1there must be something im missing cause i kinda get you...
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