Find the equation of the sphere centered at (2,−9,1) with radius 2. 4 = (x-2)+(y+9)+(z-1). give an equation which describes the intersection of this sphere with the plane z=2.

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Step-by-step explanation:

The equation of the shpere canterd at point with radius is

The center of the sphere is (2,-9,1), the radius is 2, then the equation is

Now, find the intersection of this sphere with the plane z=2. Substitute 2 instead of z into the sphere equation:

This is the equation of the circle lying in the plane z=2 with center at (2,-9,2) and radius

step-by-step explanation:

descending order means to order the polynomials from the term with the largest exponent to the term with the smallest exponent.  

therefore, the correct answer is d.  

answer: sorry i can't you.

step-by-step explanation: