Answer:
It is 23
Step-by-step explanation:
BC= FE
(x-4)=19
Therefore x= 23
Answer:
The answer would be 18/16 or 1 1/8.
Answer:
No
Step-by-step explanation:

Solution:
Given data:
and 
To find F(x) + G(x):
Adding two functions which gives another function.
Substitute F(x) and G(x), we get





Hence, 
Never,because obtuse angle is an angle measuring between 90 and 180
and if an angle measures 180 then it is a straight angle