Question

calcule o valor de X nos triângulos retângulos

Answer 1

Boa noite!

a)
$x^2=25\cdot 9\\x^2=225\\x=\sqrt{225}\\\boxed{x=15}$

b)
$x^2=9\cdot 5\\x^2=45\\x=\sqrt{45}\\\boxed{x=3\sqrt{5}}$

c)
$5\cdot x=4\cdot 3\\5x=12\\\boxed{x=\dfrac{12}{5}}$

d)
$x^2=4\cdot 16\\x^2=64\\x=\sqrt{64}\\\boxed{x=8}$

Espero ter ajudado!