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the perimeter of an isosceles triangle is p=2a+b. find the numerical value of a if p=10 and b=3
Plug in what was given into: p=2a+b to get: 10=2a+3 subtracting 3 from both sides: 10-3=2a+3-3 7=2a divide both sides by 2: 7/2= (2a)/2 7/2=a or 3.5 = a
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