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# similar triangles

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These triangles are similar what is the value of x

Feb 25, 2021

#1
+421
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The sides are being multiplied by $5$, so $3x+8=4*5=20\implies 3x=12\implies\boxed{x=4}$.

Feb 25, 2021
#2
+939
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$$\frac{3x+8}{15} = \frac{4}{3}$$

$$\frac{3x+8}{15} = \frac{20}{15}$$

3x + 8 = 20

3x = 12

$$\boxed{x = 4}$$

Feb 25, 2021