Answer:
The distance is 3.
Step-by-step explanation:
Since the x coordinates are the same, we take (-1)-(-4) = 3.
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:
(5, -21)
Step-by-step explanation:
Plugging in x = 5:
-5(5) + 4 = -21 = y
Answer:
90
Step-by-step explanation:
YW