# Chapter 2 - Solving Equations - 2-8 Proportions and Similar Figures - Practice and Problem-Solving Exercises - Page 134: 9

40

#### Work Step by Step

The problem states that the two triangles are similar triangles. This means that all of the sides and sides are proportional. To portray this relationship, we set up the proportion: $y/32=45/36$. We multiply both sides of the equation by 32 to obtain that $y=40$.

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