Find the equation of tangent plane to z=3x2−xyz=3x2−xy at point (1,2,1)(1,2,1) a.
3x−y−z=−13x−y−z=−1

b.
4x−y+z=14x−y+z=1

c.
4x+y−z=14x+y−z=1

d.
4x−y−z=1

then, the surface area of the sphere shown in the image is: 256π sq. units!

step-by-step explanation:

the lateral surface area of a sphere is 2πrh where h=2r.

then:

surface area = 4πr^2.

in this case, r=8 units ⇒ surface area = 4π(8 units)^2. = 256π sq. units!

then, the surface area of the sphere shown in the image is: 256π sq. units!

the median here is 25. your lowest value is 14 and highest value is 48. to find the third quartile, find the medium number in between 25 and 48 which would be 42 i believe.

answer: 1) twenty-seven times y

              2) twenty-seven multiplied by y