Add or subtract as indicated. Express your answer in standard form.5i - (4 - 9i)
A. -4 - 14i
B. 4 - 14i
C. -4 + 14i
D. 4 + 14i
Answer: C
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Find the absolute maxima and minima of the function on the given domain.
on the rectangular region 
A. Absolute maximum: 
at 
absolute minimum: 
at 
B. Absolute maximum: 
at 
absolute minimum: 
at 
C. Absolute maximum: 
at 
absolute minimum: 
at 
D. Absolute maximum: 
at 
absolute minimum: 
at 
Find the potential function f for the field F.F = 
A. f(x, y, z) = 
B. f(x, y, z) = - 
C. f(x, y, z) = 
D. f(x, y, z) = 
Solve the problem.A tree casts a shadow 36 m long. At the same time, the shadow cast by a 49-centimeter tall statue is 90 cm long. Find the height of the tree. Round to the nearest tenth.
A. 66.1 m B. 18.1 m C. 19.6 m D. 64.6 m
Solve the formula for the specified variable.V = 
Bh for h
A. h = 
B. h = 
C. h = 
D. h = 