Question

Help me on number 15 please

Answer 1

You've already correctly labeled everything you need.

-- Ignore the lines  YZ  and  YT .

-- That leaves you with the right triangle   XYW .

-- Its legs are  8  and  (12+3) = 15 .

-- XY  is its hypotenuse.

I'm SURE you can finish it off from here.

Answer 2

The real answer is
       you have to ignore the lines yz and yt but u labeled the rest correct so what u have there is correct just try to figure it out from there