Solve the equation.
= 
A. {6}
B. {56}
C. {-16}
D. {-56}
Answer: B
Mathematics
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Solve the problem.The gravitational attraction between two masses varies inversely as the square of the distance between them. If the force of attraction is 4 lb when the masses are 3 ft apart, what is the attraction when the masses are 6 ft apart?
A. 3 lb B. 4 lb C. 2 lb D. 1 lb
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Perform all operations in correct order.
A. 16
B. 2
C. 
D. 
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An observer for a radar station is located at the origin of a coordinate system. For the point given, find the bearing of an airplane located at that point. Express the bearing using both methods.(7, -7)
A. 45°; S 45° E B. 45°; N 45° W C. 135°; N 45° W D. 135°; S 45° E
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Determine if the matrix is in row-echelon form.
A. Yes B. No
Mathematics