Determine whether the proportion is true or false.
= 
A. True
B. False
Answer: B
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Find fx, fy, and fz.f(x, y, z) = 
A. fx = - 
; fy = - 
; fz = - 
B. fx = 
; fy = 
; fz = 
C. fx = 
; fy = 
; fz = 
D. fx = - 
; fy = - 
; fz = - 
Solve the problem.A rectangular field is to be enclosed on four sides with a fence. Fencing costs $5 per foot for two opposite sides, and $2 per foot for the other two sides. Find the dimensions of the field of area 790 ft2 that would be the cheapest to enclose.
A. 17.8 ft @ $5 by 44.4 ft @ $2 B. 44.4 ft @ $5 by 17.8 ft @ $2 C. 11.2 ft @ $5 by 70.3 ft @ $2 D. 70.3 ft @ $5 by 11.2 ft @ $2
Complete the exercises using counting techniques. How many different 4-letter radio-station call letters can be made if the first letter must be K or W, letters may be repeated, and the call letters cannot end in an O?
A. 35,152 B. 33,800 C. 16,900 D. 456,976
Solve the equation.logx 
= -4
A. 
B. -3
C. 3
D. - 