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

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

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

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

nenadmatematika Group TitleBest ResponseYou've already chosen the best response.1
so 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
 2 years ago

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

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

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

nenadmatematika Group TitleBest ResponseYou've already chosen the best response.1
haha :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
 2 years ago

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

nenadmatematika Group TitleBest ResponseYou've already chosen the best response.1
formula 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
 2 years ago

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

nenadmatematika Group TitleBest ResponseYou've already chosen the best response.1
a+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....
 2 years ago

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

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

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

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