If A denotes the area of the sector of a circle of radius r formed by the central angle ?, find the missing quantity. If necessary, round the answer to two decimal places.r = 18 inches, ? = 
radians, A = ?
A. 9.42 in2
B. 169.56 in2
C. 18.84 in2
D. 339.12 in2
Answer: B
Mathematics
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Find the eccentricity of the hyperbola.Find the eccentricity of a hyperbola centered at the origin having a focus of 
and corresponding directrix 
A. 
B. 
C. 
D. 
Mathematics
Write the quotient in standard form.
What will be an ideal response?
Mathematics
Solve the problem.If a rock is thrown vertically upward from the top of a building 112 feet high with an initial velocity of 96 feet per second, the height, h, above ground level after t seconds is given by h = -16t2 + 96t + 112, where h is in feet and t is in seconds. How many seconds will it take the rock to reach its maximum height?
A. 6 sec B. 3 sec C. 7 sec D. 2 sec
Mathematics
Evaluate.
if a = 5 and b = 3
A. 9 B. 8 C. 7 D. 10
Mathematics