Solve the problem.A household outlet has voltage given by V = 156 sin ?t, where ? is the angular velocity of the generator in radians per second and t is time in seconds. For what value of ? will the graph of 
be the same as the graph of 
A. ?
B. 2?
C. 
D. 
Answer: C
Mathematics
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Graph.9y2 - 36x2 = 324
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.A spring on a horizontal surface can be stretched and held 0.5 m from its equilibrium position with a force of 40 N. How much work is done in stretching the spring 2 m from its equilibrium position?
A. 80 J B. 160 J C. 40 J D. 320 J
Mathematics
Use a calculator to evaluate.1,8932
A. 1,895 B. 7,572 C. 3,786 D. 3,583,449
Mathematics
Convert the number in the sentence to standard notation.The total paid circulation of a certain gardening magazine is $245.5 million.
A. $2,455,000,000 B. $245,500,000,000 C. $245,500,000 D. $24,550,000
Mathematics