Solve the problem. Round to the nearest tenth unless indicated otherwise.At a fixed temperature, the resistance R of a wire varies directly as the length l and inversely as the square of its diameter d. If the resistance is 0.46 ohm when the diameter is 1 mm and the length is 230 cm, what is the resistance when the diameter is 2 mm and the length is 2170 cm?
A. 1.1 ohm
B. 542.5 ohm
C. 249.6 ohm
D. 2.2 ohm
Answer: A
Mathematics
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B. 
C. 
D. 
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Add or subtract as indicated. Express the answer as a single polynomial in standard form.(9x6 - 6x4) + (3x6 - 5x4 - 8)
A. -8x - 11x6 - 14x4 B. 12x6 - 11x4 - 8 C. -3x6 + 4x4 - 8x D. -13x11
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Solve the equation by completing the square.5x2 - 2x - 2 = 0
A. 
B. 
C. 
D. 
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Determine if the sequence is geometric. If the sequence is geometric, find the common ratio.5, 
, 
, 
, . . .
A. yes, 
B. yes, 
C. no
D. yes, 
Mathematics