Determine if segment XY is tangent to circle Z.

XY is not tangent to circle Z

Step-by-step explanation:

if ∠WXY = 90°, then XY is tangent to circle Z

test using Pythagorean theorem:

WX = 2(ZX) = 17

is 20² = 5² + 17²?

400 ≠ 25 + 289, so not tangent

location: point 0

step-by-step explanation:

well, -8 to 10 on a number line is 18 spaces.

1/9 of 18 is 2.

so, 4/9 of 18 must be 8.

8 spaces from -8 (a) is 0.

so, 4/9 of the way from -8 to 10 is 0!