I'm guessing the second derivative is for <em>y</em> with respect to <em>x</em>, i.e.

Compute the first derivative. By the chain rule,

We have


and so

Now compute the second derivative. Notice that
is a function of
; so denote it by
. Then

By the chain rule,

We have

and so the second derivative is

Answer:
x+1=4x-2
Subtract x from both sides
1=3x-2
Add 2 to both sides
3=3x
Divide 3
x=1
No it's either 185:6 or 185/6 or 185 to 6
Answer:
The answer is 50.27. I'm sorry if it's wrong.
Step-by-step explanation:
A=πr2=π·42≈50.26548
For a customer to choose a chocolate cone it need to choose "Chocolate" (0.35 probability) and choose a cone (0.4 probability given he chose chocolate).
So, the get the probability of both, we multiply their probabilities:

Thus, the probability of a customer choosing a chocolate cone is, based on the image, 0.14 or 14%.