Find the constant term to be added to the expression to form a perfect square trinomial.x2 - 18x
A. 0
B. 81
C. -81
D. None of the above
Answer: B
Mathematics
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Solve the triangle. Round to the nearest tenth when necessary or to the nearest minute as appropriate.A = 22°10'B = 26°20'a = 11.2
A. C = 132°30', b = 13.2, c = 22.2 B. C = 131°30', b = 22.2, c = 13.2 C. C = 131°30', b = 13.2, c = 22.2 D. C = 132°30', b = 22.2, c = 13.2
Mathematics
Solve.64x2 + 9 = 0
A. ±
B. 
± i
C. ±
i
D. ±
+ i
Mathematics
Match the function f with its graph.f (x) = log4 x
A. 
B. 
C. 
D. 
Mathematics
Assume that the cities lie on the same north-south line and that the radius of the earth is 6400 km. Find the distance between City E, 53° N and City F, 55° S. (Round to the nearest kilometer.)
A. 12,064 km B. 12,072 km C. 215 km D. 223 km
Mathematics