JesusSoto1
JesusSoto1
24-05-2017
Mathematics
contestada
Find the missing length indicated
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paulancka
paulancka
24-05-2017
12/21 = x/(x + 21) , x is the side of the smaller triangle
12x + 252 = 21x
9x = 252
x = 28
Length needed 28 +21 = 491
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