An auxiliary electric power station will serve three communities, A, B, and C, whose relative locations are shown in the accompanying figure. Determine where the power station should be located if the sum of the squares of the distances from each community to the site is minimized. Please round the answer to the nearest hundredth.
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?
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A. 
B. 
C. 
D. 
E. 
Answer: E
Mathematics
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Write the comparison as a ratio in the form of a fraction.23 children for every 4 adults
A. 
B. 
C. 
D. 
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Determine whether the function is one-to-one.f(x) = -(x + 6)2
A. One-to-one B. Not one-to-one
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Find the real solutions, if any, of the equation. Use the quadratic formula and a calculator. Express any solutions rounded to two decimal places.x2 + 
x - 3 = 0
A. {-2.8, -1.07} B. {-2.8, 1.07} C. {-2.8, 2.8} D. {-1.07, 2.8}
Mathematics
Solve the system mentally, without the use of a calculator or pencil-and-paper calculation. Try to visualize the graphs of both lines.x + 0y = 90x + y = 4
A. x = 9; y = 4
B. x = 4; y = 9
C. x = 9; y = 2
D. x = 2; y = 
Mathematics