Solve the problem.Find the equation for the tangent plane to the surface 
at the point 
A. z = 0
B. z = -1
C. z = 2
D. z = 1
Answer: D
Mathematics
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First determine which number (x or y) is more accurate, then which is more precise.x = 8070, y = 0.004
A. y, y B. x, x C. y, x D. x, y
Mathematics
Add or subtract by first simplifying each radical and then combining any like radicals. Assume that all variables represent positive numbers.
+ 
+ 
+ 4
A. 17
+ 14
B. 17
+ 20
C. 145
+ 160
D. 37
Mathematics
Use the properties of logarithms to find the exact value of the expression. Do not use a calculator.log4 24 - log4 6
A. 4 B. 1 C. 24 D. 6
Mathematics
Write the number as an improper fraction.9
A. 
B. 
C. 
D. 
Mathematics