Answer:

Step-by-step explanation:
It is a linear homogeneous differential equation with constant coefficients:
y" + 4y = 0
Its characteristic equation:
r^2+4=0
r1=2i
r2=-2i
We use these roots in order to find the general solution:

Answer:
1/12
Step-by-step explanation:
3/36 can easily be simplified into 1/12 you're welcome :)
B is 50 and A is all of them?
Answer:

Hey There!
The answer = 7 = ( Seventh Track of TS8= Seven )
Step-by-step explanation:

=>

Answer:
it is 6!/8!
because you take the first and second place you take it as a whole team, and divided by all the cases