Find the equation for the level surface of the function through the given point.f(x, y, z) = 
, (3, 7, 4)
A. 
= 
B. 61
= 63x2y
C. 
= 
D. 
= 
Answer: D
Mathematics
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Solve the problem.A rectangular sheet of perimeter 27 cm and dimensions x cm by y cm is to be rolled into a cylinder as shown in part (a) of the figure. What values of x and y give the largest volume?
A. x = 11 cm; y = 
cm
B. x = 8 cm; y = 
cm
C. x = 9 cm; y = 
cm
D. x = 10 cm; y = 
cm
Mathematics
Solve.If one gallon of water equals 8.34 lb, what is the weight of 625 gallons of water?
Fill in the blank(s) with the appropriate word(s).
Mathematics
Complete the identity.csc x(sin x + cos x) = ?
A. 1 + cot x B. sin x tan x C. sec x csc x D. -2 tan2 x
Mathematics
Given the matrices A and B, find the matrix product AB.A = 
, B = 
Find AB.
A. 
B. AB is not defined.
C. 
D. 
Mathematics