Fill in the blank with one of the words or phrases listed below. 
A(n) 
is a set of points extending indefinitely in two directions.
A. ray
B. line
C. line segment
D. transversal
Answer: B
Mathematics
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Find the standard equation of a parabola with the given focus or directrix. Assume that the vertex is at the origin.Directrix x = -9
A. y2 = -9x B. x = 36y2 C. y2 = 36x D. x2 = 36y
Mathematics
Use identities to simplify the expression.
A. csc2 x B. sec2 x C. 1 D. cot2 x
Mathematics
Solve. Round your answer to the nearest tenth, if necessary.An object is thrown upward from the top of a 
building with an initial velocity of 48 feet per second. The height, h, of the object after t seconds is given by the quadratic equation 
When will the object hit the ground?
A. In 5 seconds B. In 160 seconds C. In 2 seconds D. In 7 seconds
Mathematics
Solve the equation.ln(2x - 8) - ln(7x) = ln 3
A. 
B. ?
C. 
D. 
Mathematics