Answer:

Step-by-step explanation:
We are trying to evaluate this integral.

The first thing that we have to do is understand this region in the plane.

If you graph it looks something like the photo I join.
Now we need to describe that same region in polar coordinates.
That same region in polar coordinates would be

Now remember that when we do the polar transformation we use the following formula

Then our integral would be

12%=(3+10%*x)/(20+x)
x=30
add 30 pounds of the second alloy
Answer:
b
Step-by-step explanation:
2.044 by just 0.004 units
If Ramon needs the same amount of x as someone else find the missing part in the problem then the amount Ramon need (x) is you answer.