Question

question 2 of 25 what is the value of x in the diagram below? 18 45 8 7 a. 3 b. 5 c. 4 d. 6

Explanation:

Step1: Use similarity of triangles

Since the two triangles are similar, the ratios of corresponding sides are equal. So, $\frac{18}{x}=\frac{45}{15}$.

Step2: Solve for x

Cross - multiply: $45x = 18\times15$, then $x=\frac{18\times15}{45}=6$.

Answer:

D. 6