Answer:
19
Step-by-step explanation:
we could use Pythagoras on this problem
6^2+10^2= c^2
which gives us
36+100 = c^2 , which gives us 136 = c^2
so c is equal to
[tex] c \: = \sqrt{136 }[/tex]
now lets find the legth of x
[tex]( \sqrt{136} )^{2} + 15 ^{2} = x^{2} [/tex]
which gives us
[tex] {x}^{2} = 361[/tex]
which is equal to
[tex]x = 19[/tex]
