Question

urgenteeeeeeeeeeeeeeeeeee​

Answer 1

a)

$x^2=3^2+4^2\\x^2=9+16\\x^2=25\\x=5$

b)

$13^2=5^2+x^2\\169=25+x^2\\169-25=x^2\\144=x^2\\x=12$

c)

$4^2=3^2+x^2\\16=9+x^2\\16-9=x^2\\7=x^2\\x=\sqrt7$

d)

$6^2=3^2+x^2\\36=9+x^2\\36-9=x^2\\27=x^2\\x=\sqrt{27} = \sqrt{9\cdot3}\\x=3\sqrt3$