Solve the problem.Find the equation for the tangent plane to the surface   at the point 

A. z = 0
B. z = 2
C. z = 1
D. z = -1


Answer: C

Mathematics

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Sam  starts  walking  from  point  A  at 1 miles per hour. One-half  hour  later, Paul  starts  walking  from  point A at 1.5 miles per hour  and  follows  the  same  route. How long will it take Paul to catch up with Sam?

A. 60 minutes B. 65 minutes C. 55 minutes D. 70 minutes

Mathematics

Find the LCD for the given fractions., and 

A. 30 B. 12 C. 60 D. 20

Mathematics

Find the standard equation of the parabola that satisfies the given conditions. Vertex: (-3, 4); directrix: x = -5

A. (x + 3)2 = -8(x - 4) B. (y - 4)2 = 8(x + 3) C. (x - 4)2 = 8(y + 3) D. (y - 4)2 = -8(x + 3)

Mathematics

Convert the percent to a decimal.780%

A. 7.81 B. 7.8 C. 78 D. 0.78

Mathematics