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:

To round to the nearest tenth place you are going to round the last two digits of that, you should get 519.7
Answer:
B
Step-by-step explanation:
185 in because because becuase i searches it up up yp up up up up up up
Answer:
send the graph and ill solve it
Step-by-step explanation: