32 were in the bag originally and 8 remain
Answer: the answer is on a calculator
Step-by-step explanation:
If your aboe to do that you can so anything
Answer:
let's say Daniel's age is x and Ben's age is 3x or x+20
3x=x+20
2x=20
x=10
Daniel was 10 three years ago, Ben was 30, now he is 33
As a first step, convert to cylindrical coordinates. The equation
is a clue to set
then have
and
. Meanwhile, the plane equation tells you to use
So we parameterize the part of the plane within the cylinder with the vector-valued function
The surface integral giving the area of the surface is
where
denotes the surface in question, and the surface element
is
We have
So the area is