Solve the equation by factoring.18x2 + 14x = 0
A. x = 0
B. x = - 
or x = 0
C. x = 
or x = 0
D. x = - 
or x = 
Answer: B
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Solve the problem.The gravitational force (in lb) of attraction between two objects is given by 
where x is the distance between the objects. If the objects are 10 ft apart, find the work required to separate them until they are 50 ft apart. Express the result in terms of k.
A. 
k
B. 
k
C. 
k
D. 
k
Use unit ratios or conversion factors to change to the units indicated. Round to the nearest tenth, if necessary.6 km to miles
A. 6.4 mi B. 3.7 mi C. 9.7 mi D. 5.7 mi
Find a rectangular equation for the plane curve defined by the parametric equations.x = 5 tan t, y = 4 cot t
A. y = 
B. y = 
sin x
C. y = 
cos x
D. y = 
True or false?In Lobachevskian geometry, the sum of the measures of the angles of a triangle is greater than 180
.
A. False B. True