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Algebra
Level
pending
In an isosceles triangle ABC, AB=AC, the perimeter is 20cm, let Y be the base, please find out the the functional relationships between each side, and find out the value range of the Independent variable X.
y=-2x+20 , 0<x<20
y=-2x+20 , 5<x<10
y=2x-20 , 0<x<20
y=2x-20 , 5<x<10
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