Yes it is a geometric sequence and the common ratio is 2/3
Answer:

Step-by-step explanation:
see the attached figure to better understand the problem
we know that
Triangle ABC and ADE are congruent triangles by SSS Theorem postulate
therefore

Step-by-step explanation:
A²+B²=C²
A²+4²=5²
A²+16=25
-16 -16
A²=9
√A=√9
A=3
Evaluating a function means to plug the required value, substituting every x occurrence with that value.
So, you have

Answer:
yes it is. ")
Step-by-step explanation: