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The black triangles are similar. Find the value of x.

No links please!!

The black triangles are similar. Find the value of x. No links please!!-example-1
User Peter Bray
by
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1 Answer

2 votes

9514 1404 393

Answer:

16

Explanation:

The altitude of the triangle is 12/21 = 4/7 of the marked side. If we assume that the marked sides are the ones that are corresponding, then ...

x = (4/7)(28)

x = 16

User Bugfixer
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