<span>Simplify ((1/x)-(1/y))/((1/x)+(1/y))</span>
y-x
______
y+x
The two parabolas intersect for

and so the base of each solid is the set

The side length of each cross section that coincides with B is equal to the vertical distance between the two parabolas,
. But since -2 ≤ x ≤ 2, this reduces to
.
a. Square cross sections will contribute a volume of

where ∆x is the thickness of the section. Then the volume would be

where we take advantage of symmetry in the first line.
b. For a semicircle, the side length we found earlier corresponds to diameter. Each semicircular cross section will contribute a volume of

We end up with the same integral as before except for the leading constant:

Using the result of part (a), the volume is

c. An equilateral triangle with side length s has area √3/4 s², hence the volume of a given section is

and using the result of part (a) again, the volume is

Answer:
5/7 is the only one
Step-by-step explanation:
Answer:
Step-by-step explanation:
17+3=20/2
mean=10
Answer:
1.06
Step-by-step explanation:
d + 0.06d
= 1.06d
I am pretty sure this is the answer. Sorry if its wrong