SOLUTION: 4. The two triangles are similar. Find the indicated side. Find y. <a href="http://s293.photobucket.com/albums/mm56/cool_user2004/?action=view&current=4.jpg" target="_blank">

Algebra ->  Formulas -> SOLUTION: 4. The two triangles are similar. Find the indicated side. Find y. <a href="http://s293.photobucket.com/albums/mm56/cool_user2004/?action=view&current=4.jpg" target="_blank">      Log On


   

Question 139948: 4. The two triangles are similar. Find the indicated side. Find y.

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Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Since the triangles are similar, this means that the length of the sides are dependent on one another. In fact, these sides form the ratio:


10%2F8=5%2Fy


%2810%2F8%29%2Ay=5 Multiply both sides by y


10%2Ay=5%2A8 Multiply both sides by 8


10%2Ay=40 Multiply


y=40%2F10 Divide both sides by 10


y=4 Simplify



So our answer is y=4