Answer:
It is not.
Step-by-step explanation:
For XY to be a tangent XY must be perpendicular to radius at point of contact with circle (X).
Perpendicular also means 90° angle between XY and radius.
90° angle means XYZ should be a right angled triangle
Test for right angle triangle: pythagoras theorem.
3.6²+2.7²≠1.8²
Hence not right angled. XY not a tangent.
Answer:
Step-by-step explanation:
Answer:
g(f(-4)) = -8
f(g(x)) = 13-10x
Step-by-step explanation:
g(f(-4)):
Plug in the equation f(x) into the variable x of g(x), we have:

Plug in x = -4 and the answer is -8
f(g(x)):
Plug in the equation g(x) into the variable x of f(x), we have:

Answer:
Z(integer)
Step-by-step explanation:
N is subset of W
W is subset of Z
Z is subset of Q
Q and Q* are subset of R
Yes
Yes
No
No hopefully I helped