C:
6*2 = 2.5c
c = 4.8
b:
Cannot be solved until the measure of one other angle in the X is added.
The factored form of the expression
is 
The expression x^2 + 9 has no real roots hence cannot be factored
Quadratic equations are equations with a degree of 2.
Given the quadratic function 
For the function 

Using the difference of two squares:

For the expression x^2 + 9
The expression x^2 + 9 has no real roots hence cannot be factored
Learn more on factorization here: brainly.com/question/20293447
Answer
6
Step-by-step explanation:
Answer:
3/2
Step-by-step explanation:
It is proportional because it is 6/4 simplified.