A coin is tossed five times and the sequence of heads and tails is observed. What is the number of different outcomes having more heads than tails?
A. 21
B. 3
C. 10
D. 12
E. none of these
Answer: E
Mathematics
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Find the direction angles of each vector. Round to the nearest degree, if necessary.v = -2i + 4j - 3k
A. ? = 112°, ? = 42°, ? = 124° B. ? = 115°, ? = 33°, ? = 129° C. ? = 113°, ? = 40°, ? = 125° D. ? = 119°, ? = 14°, ? = 137°
Mathematics
Graph.y = x2 - 3
A. 
B. 
C. 
D. 
Mathematics
Find the mode or modes (if any).65, 25, 65, 13, 25, 29, 56, 65
A. 42.5 B. 65 C. 42.9 D. no mode
Mathematics
The eccentricity is given of a conic section with one focus at the origin, along with the directrix corresponding to that focus. Find a polar equation for the conic section. e = 1/2, x = 9
A. r = 
B. r = 
C. r = 
D. r = 
Mathematics