Find the second derivative.w = z-4 - 
A. -4z-5 + 
B. 20z-6 + 
C. 20z-6 - 
D. -4z-6 - 
Answer: C
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Evaluate the surface integral of the function g over the surface S.G(x, y, z) = x3y3z3; S is the surface of the rectangular prism formed from the coordinate planes and the planes x = 2, y = 1, and z = 2
A. 4 B. 8 C. 32 D. 128
Identify the rule of algebra illustrated by the statement. 5p + 4p = (5 + 4)p
A. associative property of addition B. commutative property of addition C. associative property of multiplication D. commutative property of multiplication E. distributive property
Solve the problem.If cos A = - 
and cos B = - 
, with A and B in quadrant III, then find sin(A + B).
A. 
B. 
C. 
D. 
Write an algebraic expression to answer the question and simplify.An investor buys 90 shares of stock for d dollars per share. The next day two other investors each buy the same number of shares, but the price has risen by $2 per share. How much have the three investors spent?
A. 90d + 2 ? 90d + 4; 270d + 4 dollars B. 90d + 90(d + 2); 180d + 180 dollars C. 90d + 2 ? 90(d + 2); 270d + 360 dollars D. Cannot be solved