brookelee
brookelee
23-01-2018
Mathematics
contestada
I️ don’t understand this
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HenryLCH
HenryLCH
23-01-2018
Let x cm be the height of the triangle
then the base =(3x+5)cm
(x*(3x+5))/2=69
3x^2+5x-138=0
x=6 or -23/3(rejected)
Therefore, height= 6cm, base=23cm
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