Find the focus and directrix of the parabola.y = 10x2

A. , x = - 
B. , x = - 
C. , y = 
D. , y = - 


Answer: D

Mathematics

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Find the eccentricity of the hyperbola.x2 - 2y2 = 6

A.  
B.
C.
D.

Mathematics

Write an inequality involving the variable x that describes the set of numbers graphed.

A. -6 ? x < -2 B. -6 < x ? -2 C. -6 ? x ? -2 D. -6 < x < -2

Mathematics

Solve.The velocity v of a falling object (ignoring air resistance) is directly proportional to the time t of the fall. If, after 5 seconds, the velocity is 160 feet per second, what will its velocity be after 8 seconds?

A. 256 feet/second
B. 259 feet/second
C.  foot/second
D. 163 feet/second

Mathematics

Convert as indicated.The meeting hall in the student union has 10,800 square feet of floor space. Convert this to square yards.

A. 97,200 sq yd B. 3600 sq yd C. 32,400 sq yd D. 1200 sq yd

Mathematics