Can someone explain how i do this. my teacher is kinda useless.

when the altitude is drawn from the vertex of the right angle of a right triangle to its hypotenuse, the altitude equals the product of the two segments of the hypotenuse.
(w+9)²=8*18=144
w+9=12 or w+9=-12
w=3 (discard the negative number)

use the same method, z=√(9*11)=3√11

next, you can use the Pythagorean theorem to find x and y.
x=√(9²+99)=√180=6√5
y=√(11²+99)=√220=2√55

Om I really hate my math teacher to go he talks to fast and don’t makes sense like lol

The first graph is the answer

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