Solve the equation by completing the square. Express any complex numbers using i notation.x2 + 4x - 16 = 0
A. x = ±2
B. x = -2 ± 2
C. x = 2
± 2
D. x = -2 ± 2
Answer: B
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Solve the problem.The surface area of a hollow cylinder (tube) is given by 
where h is the length of the cylinder and R1 and R2 are the outer and inner radii. If h, R1, and R2 are measured to be 6 inches, 6 inches, and 10 inches respectively, and if these measurements are accurate to within 0.1 inches, estimate the maximum possible error in computing S.
A. 25.13 B. 21.36 C. 13.82 D. 17.59
The equation gives the position s = f(t) of a body moving on a coordinate line (s in meters, t in seconds).s = 1 + 5 cos tFind the body's velocity at time t = ?/3 sec.
A. - 
m/sec
B. 
m/sec
C. 
m/sec
D. - 
m/sec
Determine if the given regular figures form a vertex figure.Two triangles, square, 18-gon
A. Yes B. No
Find the probability of the following card hands from a 52-card deck. In poker, aces are either high or low. A bridge hand is made up of 13 cards.In bridge, 6 of one suit, 4 of another, and 3 of another
A. .0060 B. .0022 C. .00055 D. .0133