Solve the problem.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 1.2 ohm when the diameter is 1 mm and the length is 240 cm, what is the resistance when the diameter is 4 mm and the length is 1870 cm?
A. 0.584 ohm
B. 140.25 ohm
C. 2.338 ohm
D. 116.875 ohm
Answer: A
Mathematics
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Triangle ABC is a right triangle with sides of lengths a, b, and c and a right angle at C. Find the indicated trigonometric function value of A. Rationalize denominators containing radicals.a = 3, b = 
; find cos A.
A. 
B. 
C. 
D. 
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Solve the problem.Weather is classified as sunny or cloudy in a certain place. What are the long-term predictions for sunny and cloudy days? Round numbers to the nearest thousandth.SunnyCloudy 
A. 
B. 
C. 
D. 
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Identify the sequence as arithmetic, geometric, or neither.4, -4, 5, -5, 6, -6, . . .
A. Arithmetic B. Geometric C. Neither
Mathematics
Solve the equation.
- 
= 1
A. 
B. 
C. ?
D. 
Mathematics