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Hi! need help asap xx

Hi! need help asap xx-example-1
User Architekt
by
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2 Answers

2 votes

Answer:

C) x = 6

because this is a right triangle

=> we have:

(12² + x²)(3² + x²) = (15x)²

<=> 1296 + 153x² + x⁴ = 225x²

<=> x⁴ - 72x² + 1296 = 0

<=> (x² - 36)² = 0

<=> x² = 36

=> x = 6

User Dan Higham
by
7.7k points
8 votes

Answer:

C

Explanation:

The 3 triangles are all similar.

Using the 2 inside then the ratios of corresponding sides are equal, that is


(x)/(3) =
(12)/(x) ( cross- multiply )

x² = 36 ( take the square root of both sides )

x =
√(36) = 6 → C

User SitiSchu
by
8.1k points

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