Find the angle between the given vectors to the nearest tenth of a degree.u = i + 
j, v = -i + 8j
A. 13.6°
B. 68.9°
C. 15.3°
D. 27.8°
Answer: D
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 y = -8
A. y2 = 32x B. x2 = -8y C. x2 = 32y D. x = 32y2
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Find the perimeter of the triangle.an equilateral triangle whose side measures 9 yd
A. 27 yd B. 40.5 yd C. 18 yd D. 26 yd
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Find the least common denominator.
, 
A. 4a - 8 B. 4a(a - 8) C. 4a2 - 32 D. 4a2 - 8
Mathematics
Use the given table to find the indicated probability.The following table contains data from a study of two airlines which fly to Smalltown, USA.
P(flight arrived on time ? flight was on Upstate Airlines)?
A. 
B. 
C. 
D. None of the above
Mathematics