Answer:
Step-by-step explanation:
The formula to calculate the surface area of a sphere is the following:
Where A is the area of the sphere and r is the radius of the sphere.
In this case we know that the diameter d of the sphere is:
The diameter is:
.
Thus
Then the surface area of the sphere is:
Answer:
The domain of (f+g)(x) is all real numbers.
The domain of (f-g)(x) is all real numbers.
Step-by-step explanation:
The given functions are
and
By the algebraic properties of polynomial functions:
This becomes:
We subtract to obtain:
Also
When x=-4
Then also;
The domain refers to the values that makes the function defined.
Both are cube root functions and are defined for all real numbers.
The domain of (f+g)(x) is all real numbers.
The domain of (f-g)(x) is all real numbers.
