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26-10-2017
Mathematics

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help me with these two questions , please they are due in some hours

help me with these two questions please they are due in some hours class=

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26-10-2017

for the first the correct answer is C

the second
the perimiter of the triangle is equal the sum of the sides
x +x-1+x-2= 12
3x = 12 +3

x= 15/3 = 5

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