Divide.-6.78 ÷ (-1000)
A. 0.00678
B. 678
C. 0.000678
D. 6780
Answer: A
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Solve.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 0.63 ohm when the diameter is 1 mm and the length is 210 cm, what is the resistance when the diameter is 3 mm and the length is 1370 cm?
A. 0.457 ohm B. 1.37 ohm C. 152.222 ohm D. 95.9 ohm
Solve the problem.The amount of taxes collected in one year is $11,962,185,864. Round this amount to the nearest hundred-thousand.
A. $11,962,000,000 B. $11,962,200,000 C. $11,962,185,900 D. $11,962,190,000
Provide an appropriate response.A prediction made by early psychology relating the magnitude of a stimulus x to the magnitude of a response y is expressed by the equation y = kx2, where k is a constant of the experiment. In an experiment on noise levels, 
Use a graphing calculator to graph the equation.
What will be an ideal response?
Factor completely. If the polynomial cannot be factored, say it is prime.10x4 + 19x2 + 6
A. (2x2 + 1)(5x2 + 6) B. (5x2 - 2)(2x2 - 3) C. (2x2 + 3)(5x2 + 2) D. (10x2 + 3)(x2 + 2)