Answer:
its a variety of selection techniques in which sample members are selected by chance
Step-by-step explanation:
Answer:
option C is your right answer
Step-by-step explanation:
have a nice day!!
If you're simplifying the equation your answer is going to become -d^3 +3d^2 +23d -30
Answer:
2 over 7
Step-by-step explanation:
Note that if

, then

, and so we can collapse the system of ODEs into a linear ODE:


which is a pretty standard linear ODE with constant coefficients. We have characteristic equation

so that the characteristic solution is

Now let's suppose the particular solution is

. Then

and so

Thus the general solution for

is

and you can find the solution

by simply differentiating

.