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